Concrete carbonation curing system, carbonation curing method, and program

Abstract

To provide a concrete carbonation curing system capable of suppressing cost and labor in concrete carbonation curing.SOLUTION: A concrete carbonation curing system S according to the present invention includes a concave curing tank D which is formed on a ground surface G and on which concrete C to be subjected to carbonation curing can be placed, an adjustment unit 10 capable of adjusting at least one of a temperature, a humidity, and a carbon dioxide concentration inside the curing tank D, the humidity being a relative humidity or an absolute humidity, and a measurement unit 20 capable of acquiring the carbon dioxide concentration and at least one of the temperature and the relative humidity or the absolute humidity inside the curing tank D.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a concrete carbonation curing system, a carbonation curing method, and a program. [Background technology]

[0002] Carbonation curing techniques for fixing carbon dioxide in concrete are known. Patent Document 1 is an example of this type of technology. Patent Document 1 describes a carbonation curing system used to produce carbonated concrete, which uses a thermal power plant as a carbon dioxide gas supply source for carbonation curing a material contained in a carbonation curing tank whose interior is a shielded space, and is equipped with an exhaust gas supply means for supplying exhaust gas emitted from the thermal power plant into the carbonation curing tank. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-126623 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the carbonation curing tank (curing tank) described in Patent Document 1 may leak carbon dioxide, and therefore, it takes time and cost to monitor the leak, to supply additional carbon dioxide to make up for the leaked gas, and to take measures to prevent the leak from occurring in the carbonation curing tank.

[0005] An object of the present invention is to provide a concrete carbonation curing system, a carbonation curing method, and a program that can reduce the cost and effort required for concrete carbonation curing. [Means for solving the problem]

[0006] (1) The concrete carbonation curing system of the present invention comprises a concave curing tank formed vertically below the floor or ground surface inside a building, in which concrete to be carbonation cured can be placed; an adjustment unit capable of adjusting the carbon dioxide concentration inside the curing tank and at least one of the temperature and humidity; and a curing tank internal information acquisition unit, wherein the humidity is relative humidity or absolute humidity, capable of acquiring carbon dioxide concentration information indicating the carbon dioxide concentration inside the curing tank, temperature information indicating the temperature, and humidity information indicating the humidity, at least one of which can be adjusted by the adjustment unit.

[0007] (1) The concrete carbonation curing system can reduce the cost and effort required for concrete carbonation curing.

[0008] (2) The concrete carbonation curing system described in (1) further includes a control unit that controls the adjustment unit based on information acquired by the curing tank internal information acquisition unit, wherein the curing tank internal information acquisition unit has at least one of a temperature measurement unit that can measure the temperature inside the curing tank and a humidity measurement unit that can measure the humidity inside the curing tank, and a carbon dioxide concentration measurement unit that can measure the carbon dioxide concentration inside the curing tank, the adjustment unit has a temperature and humidity adjustment unit that can adjust the temperature and the humidity inside the curing tank, and a carbon dioxide supply unit that can supply carbon dioxide inside the curing tank, and the control unit has a measurement result acquisition unit that acquires the measurement results measured by the curing tank internal information acquisition unit, a temperature and humidity control unit that controls the temperature and humidity adjustment unit based on the measurement results, and a carbon dioxide supply control unit that controls the carbon dioxide supply unit based on the measurement results.

[0009] (2) The concrete carbonation curing system can appropriately control temperature and humidity, supply carbon dioxide more efficiently to carbonate and cure concrete, while reducing the cost and effort involved in carbonation curing of concrete.

[0010] (3) In the concrete curing system described in (2), the curing tank internal information acquisition unit includes at least one of a temperature measurement unit capable of measuring the temperature inside the curing tank and a humidity measurement unit capable of measuring the humidity inside the curing tank, and a carbon dioxide concentration measurement unit capable of measuring the carbon dioxide concentration inside the curing tank. The adjustment unit is capable of supplying a gas containing carbon dioxide, the temperature and / or humidity of which has been adjusted, to the inside of the curing tank. The control unit includes a measurement result acquisition unit that acquires the measurement results obtained by the curing tank internal information acquisition unit, a temperature and humidity control unit that controls the adjustment of at least one of the temperature and humidity of the carbon dioxide supplied to the adjustment unit based on the measurement results, and a carbon dioxide supply control unit that controls the supply of carbon dioxide by the adjustment unit based on the measurement results.

[0011] (3) The concrete carbonation curing system has a simpler configuration and can appropriately control at least one of temperature and humidity, supplying carbon dioxide more efficiently to carbonate and cure concrete, while reducing the cost and effort involved in carbonation curing of concrete.

[0012] (4) In the concrete carbonation curing system described in (2) or (3), the control unit has a carbon dioxide supply determination unit that determines whether or not to start supplying carbon dioxide into the curing tank based on the measurement results acquired by the measurement result acquisition unit, and the carbon dioxide supply control unit causes the adjustment unit to supply carbon dioxide when the carbon dioxide supply determination unit determines that the supply of carbon dioxide into the curing tank should be started.

[0013] (4) The concrete carbonation curing system can efficiently supply carbon dioxide with simpler control to carbonate and cure concrete, while reducing the cost and effort required for carbonation curing of concrete.

[0014] (5) In the concrete carbonation curing system described in (4), the carbon dioxide concentration measurement unit has a first concentration meter placed inside the curing tank at a position higher than the height of the concrete and lower than the floor surface or the ground surface inside the building, and the carbon dioxide supply determination unit determines that carbon dioxide supply into the curing tank should be started when the measurement result of the carbon dioxide concentration by the first concentration meter becomes less than a first concentration.

[0015] (5) The concrete carbonation curing system supplies the amount of carbon dioxide necessary for carbonation curing, and carbonation curing of concrete is carried out while reducing the cost and effort involved in carbonation curing of concrete.

[0016] (6) In the concrete carbonation curing system described in any one of (2) to (5), the control unit has a material age information acquisition unit capable of acquiring material age information of the concrete, and a quality determination unit that determines the quality of the concrete based on the temperature measured by the temperature measurement unit, the humidity measured by the humidity measurement unit, the carbon dioxide concentration measured by the carbon dioxide concentration measurement unit, and the concrete age information acquired by the material age information acquisition unit inside the curing tank.

[0017] (6) The concrete carbonation curing system can reduce the cost and effort required for concrete carbonation curing while ensuring the required quality of the concrete to be carbonation cured.

[0018] (7) In the concrete carbonation curing system according to any one of (1) to (6), the adjusting unit is placed on a floor surface inside the building or on the ground surface.

[0019] In the concrete carbonation curing system (7), the carbon dioxide supplied onto the floor or ground surface inside the building has a higher specific gravity than air, and therefore descends into the curing tank located below the floor or ground surface inside the building. This reduces the energy required to send carbon dioxide from the carbon dioxide supply source, thereby more effectively reducing the costs and effort required for concrete carbonation curing.

[0020] (8) A carbonation curing method according to the present invention is a carbonation curing method using the concrete carbonation curing system described in (1), and includes the steps of: placing the concrete in the curing tank; acquiring the carbon dioxide concentration information, the humidity information, and / or the temperature information inside the curing tank acquired by the curing tank internal information acquisition unit; determining whether the temperature information and the humidity information acquired by the curing tank internal information acquisition unit are within a predetermined range; controlling the operation of the adjustment unit based on the determination result in the temperature and humidity determination step; and determining whether to start supplying carbon dioxide to the inside of the curing tank based on the carbon dioxide concentration acquired by the curing tank internal information acquisition unit.

[0021] The carbonation curing method (8) can reduce the cost and labor required for carbonation curing of concrete.

[0022] (9) The program according to the present invention is a program executed by the concrete carbonation curing system described in (1), and executes the following: a curing tank internal information acquisition function that acquires the carbon dioxide concentration information, the humidity information, and / or the temperature information inside the curing tank acquired by the curing tank internal information acquisition unit; a temperature and humidity determination function that determines whether the temperature information and the humidity information acquired by the curing tank internal information acquisition unit are within a predetermined range; a temperature and humidity control function that controls the operation of the adjustment unit based on the determination result by the temperature and humidity determination function; and a carbon dioxide supply determination function that determines whether or not to start supplying carbon dioxide into the inside of the curing tank based on the carbon dioxide concentration acquired by the curing tank internal information acquisition unit.

[0023] (9) Program can reduce the cost and effort involved in concrete carbonation curing. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a schematic diagram showing a concrete carbonation curing system according to one embodiment of the present invention. [Figure 2] 1 is a block diagram showing a hardware configuration of a control device according to an embodiment of the present invention; [Figure 3] FIG. 2 is a block diagram illustrating the functional configuration of a control device according to an embodiment of the present invention. [Figure 4] 1 is a flowchart illustrating a concrete carbonation curing method using a concrete carbonation curing system according to one embodiment of the present invention. [Figure 5] 1 is a flowchart for explaining a concrete quality determination process according to an embodiment of the present invention. [Figure 6] 4 is a flowchart illustrating a temperature and humidity adjustment process according to an embodiment of the present invention. [Figure 7] 4 is a flowchart illustrating a carbon dioxide supply process according to one embodiment of the present invention. [Figure 8]10 is a flowchart illustrating a carbon dioxide supply process according to a first modified example. [Figure 9] 10 is a flowchart illustrating a carbon dioxide supply process according to a second modified example. [Figure 10] FIG. 10 is a schematic diagram showing a concrete carbonation curing system according to a third modified example. [Figure 11] FIG. 10 is a block diagram showing a hardware configuration of a control device according to a third modified example. [Figure 12] FIG. 10 is a block diagram illustrating a functional configuration of a control device according to a third modified example. [Figure 13] FIG. 10 is a schematic diagram showing a concrete carbonation curing system according to a fourth modified example before carbon dioxide is supplied. [Figure 14] FIG. 10 is a schematic diagram showing a concrete carbonation curing system according to a fourth modified example after carbon dioxide is supplied. DETAILED DESCRIPTION OF THE INVENTION

[0025] <Concrete carbonation curing system> A concrete carbonation curing system S according to one embodiment of the present invention will be described below with reference to Figs. 1 to 3. The concrete carbonation curing system S is a system for storing and carbonating concrete C, such as manufactured precast concrete. The concrete C is not limited to precast concrete. For the sake of convenience in the description herein, the concrete C will be described as including a plurality of concrete pieces stacked together, as shown in Fig. 1. As shown in Fig. 1, the concrete carbonation curing system S has a curing tank D, an adjustment unit 10, a measurement unit 20 as a unit for acquiring information about the inside of the curing tank, and a control device 30.

[0026] The curing tank D is configured to hold concrete to be carbonation cured. The curing tank D is formed vertically below the floor surface or ground surface inside a building. The curing tank D according to this embodiment is formed vertically below the ground surface G, which is the ground surface, as shown in FIG. 1. The curing tank D is formed into a concave shape by digging into the ground G. The concrete C to be carbonation cured is placed on the bottom of this concave shape. In this embodiment, the specific gravity of carbon dioxide required for curing is heavier than air, and therefore no carbon dioxide leaks from above the curing tank D. Therefore, the curing tank D is formed so that it is open to the outside without a cover such as a lid above it.

[0027] This simplifies the curing tank D as a curing space and reduces initial costs. Furthermore, when supplying carbon dioxide, simply supplying carbon dioxide to any of the openings above the curing tank D causes the carbon dioxide to descend into the curing tank D, eliminating the need to install a separate flow path such as piping, thereby reducing initial costs. However, a cover such as a lid can be placed on top of the curing tank D to block it from the outside.

[0028] The curing tank D is formed to a depth that allows the concrete C to be stored therein. For example, the curing tank D is formed so that the depth d from the ground G to the bottom of the curing tank D is greater than the height hc of the concrete C. In other words, the height hc of the concrete C is set to be lower than the depth d from the ground G to the bottom of the curing tank D. Note that the curing tank D may be formed vertically below the floor surface inside the building as described above. For example, the curing tank may be formed on the floor surface of the second or higher floor of a two or more story building. In this case, the vertical thickness of the curing tank D, which is a structure that constitutes the floor, is set to have sufficient strength.

[0029] The adjustment unit 10 is configured to be able to adjust at least one of the temperature and humidity, and the carbon dioxide concentration inside the curing tank D. The adjustment unit has, for example, a temperature and humidity adjustment unit 11 and a carbon dioxide supply unit 12. Note that the humidity referred to here may be either relative humidity or absolute humidity. Hereinafter, when it is necessary to particularly distinguish between relative humidity and absolute humidity, the relative humidity and absolute humidity may be collectively referred to as humidity.

[0030] The temperature and humidity adjusting unit 11 is capable of performing a temperature and humidity adjusting operation to adjust at least one of the temperature and humidity inside the curing tank D. More specifically, the temperature and humidity adjusting unit 11 according to this embodiment includes, for example, a known temperature adjusting device (not shown), a known humidity adjusting device (not shown), a circulation flow path (not shown) that allows gas to circulate between the inside of the curing tank D and the temperature adjusting device and the humidity adjusting device, and a circulation device (not shown) that circulates gas inside the flow path. In this case, the temperature adjusting device and the humidity adjusting device adjust the temperature and humidity of the gas circulated inside the flow path by the circulation device, thereby adjusting the temperature and humidity inside the curing tank D. The configuration of the temperature and humidity adjusting unit 11 is not limited to this.

[0031] The carbon dioxide supply unit 12 is capable of performing a carbon dioxide supply operation to supply carbon dioxide into the inside of the curing tank D. The carbon dioxide supply unit 12 is placed on the ground G and includes, for example, a carbon dioxide cylinder (not shown) in which carbon dioxide is stored, and a supply flow rate adjustment device. The supply flow rate adjustment device is connected to the control device 30 via a communication unit 308 (described later), and is capable of adjusting the supply flow rate of carbon dioxide from the carbon dioxide cylinder under the control of the control unit 310. The carbon dioxide supply port provided on the carbon dioxide cylinder is placed at the top of the curing tank D.

[0032] The carbon dioxide supply unit 12 according to this embodiment supplies carbon dioxide from a cylinder in which carbon dioxide is stored, but is not limited thereto. For example, carbon dioxide contained in exhaust gas may be supplied. The exhaust gas may be combustion exhaust gas from a thermal power plant or exhaust gas from a natural gas mining plant. For example, the carbon dioxide supply unit 12 may supply separated and recovered gas obtained by separating and recovering carbon dioxide from exhaust gas from a thermal power plant, a natural gas mining plant, or the like.

[0033] In the concrete carbonation curing system S according to this embodiment, the curing tank D is formed on the ground G, and the inside of the curing tank D is surrounded by the ground. This prevents the carbon dioxide supplied by the carbon dioxide supply unit 12 from leaking to the outside.

[0034] The measurement unit 20 is configured to be able to measure carbon dioxide information, temperature information, and humidity information indicating at least one of relative humidity and absolute humidity inside the curing tank D. In this embodiment, the carbon dioxide information indicates a numerical value of the carbon dioxide concentration. The temperature information indicates a numerical value of the temperature. The humidity information indicates a numerical value of the humidity. The measurement unit 20 according to this embodiment is capable of measuring the carbon dioxide concentration, temperature, and relative humidity inside the curing tank D. The measurement unit 20 may also be capable of measuring the carbon dioxide concentration, temperature, and absolute humidity inside the curing tank D. The measurement unit 20 has at least one of a temperature sensor 20a as a temperature measurement unit and a humidity sensor 20b as a humidity measurement unit, and a carbon dioxide concentration measurement unit 20c. The measurement unit 20 according to this embodiment has the temperature sensor 20a, the humidity sensor 20b, and the carbon dioxide concentration measurement unit 20c.

[0035] The temperature sensor 20a is a known temperature sensor capable of measuring the temperature inside the curing tank D.

[0036] The humidity sensor 20b is a known humidity sensor capable of measuring the relative humidity inside the curing tank D. The humidity sensor 20b may be a known humidity sensor capable of measuring the absolute humidity inside the curing tank D.

[0037] The carbon dioxide concentration measuring unit 20c has one or more concentration meters and is configured to measure the carbon dioxide concentration for carbon dioxide supply control to supply carbon dioxide into the curing tank D. Here, because carbon dioxide has a higher specific gravity than air, when carbon dioxide is fixed in the concrete C in the curing tank D and is consumed, carbon dioxide gradually decreases from the upper part of the curing tank D, and the carbon dioxide concentration decreases. As carbon dioxide is further consumed, the carbon dioxide concentration near the upper part of the concrete C undergoing carbonation curing also gradually decreases. The lower the carbon dioxide concentration, the slower the carbonation rate, and therefore the amount of carbon dioxide fixed from the upper part of the concrete C becomes relatively smaller.

[0038] Therefore, in order to sufficiently carbonate and cure the concrete C, it is necessary to supply carbon dioxide to the amount consumed. For this reason, carbon dioxide supply control is performed based on the carbon dioxide concentration measurement results obtained by the carbon dioxide concentration measurement unit 20c. The timings for starting and ending the carbon dioxide supply are determined by the height of the concentration meter in the curing tank D. In this embodiment, the timings for starting and ending the carbon dioxide supply are determined using the measurement results of two concentration meters, a first concentration meter 20c1 and a second concentration meter, which will be described later. However, they can also be determined using the measurement result of a single concentration meter, as in a first modified example, which will be described later.

[0039] Furthermore, since the height hc of the concrete C may differ for each concrete product, it is preferable that the carbon dioxide concentration measurement unit 20c has multiple concentration meters arranged at various heights. When the carbon dioxide concentration measurement unit 20c has multiple concentration meters, the multiple concentration meters are arranged at intervals in the vertical direction inside the curing tank D. The more concentration meters arranged at intervals in the vertical direction inside the curing tank D, the more precise the control of the carbon dioxide concentration can be. With this configuration, the amount of carbon dioxide stored inside the curing tank D can be minimized even when concrete products of various heights are stored in the curing tank D.

[0040] The carbon dioxide concentration measurement unit 20c according to this embodiment has a plurality of concentration meters. Specifically, the carbon dioxide concentration measurement unit 20c according to this embodiment has a first concentration meter 20c1, a second concentration meter 20c2, and a third concentration meter 20c3 as concentration meters. The first concentration meter 20c1, the second concentration meter 20c2, and the third concentration meter 20c3 are known carbon dioxide concentration meters. The arrangement of the concentration meters in the carbon dioxide concentration measurement unit 20c will be described in more detail below.

[0041] If it is desired to sufficiently immobilize carbon dioxide throughout the entire concrete C, including the upper side thereof, it is preferable to start the supply of carbon dioxide before the carbon dioxide concentration at height hc of the concrete C becomes low. In this case, it is preferable that the height from the bottom of the curing tank D of the concentration meter used to determine the start of carbon dioxide supply is set to be higher than the height hc of the concrete C. In this embodiment, the height h1 from the bottom of the curing tank D of the first concentration meter 20c1 used to determine the start of carbon dioxide supply is set to be higher than the height hc of the concrete C. Furthermore, the higher the height from the bottom of the curing tank D of the concentration meter used to determine the start of carbon dioxide supply, the more reliably carbon dioxide can be immobilized in the concrete C.

[0042] If it is desired to sufficiently immobilize carbon dioxide above the concrete C, it is preferable to end the supply of carbon dioxide after the carbon dioxide concentration near the ground G in the curing tank D has reached a sufficient concentration. In this case, the height of the concentration meter used to determine the end of the carbon dioxide supply from the bottom of the curing tank D is preferably higher than the height hc of the concrete C, and the closer it is to the ground G, the better. In this embodiment, the height h2 of the second concentration meter 20c2 used to determine the end of the carbon dioxide supply from the bottom of the curing tank D is set to be higher than the height hc of the concrete C and closer to the ground G than the first concentration meter 20c1.

[0043] On the other hand, if it is desired to minimize the amount of carbon dioxide stored inside the curing tank D, it is preferable to start the supply of carbon dioxide immediately before the carbon dioxide concentration at the height hc of the concrete C becomes low. In this case, it is preferable that the height from the bottom of the curing tank D of the concentration meter used to determine the start of carbon dioxide supply is higher than the height hc of the concrete C and is as close as possible to the height hc of the concrete C. In this embodiment, the height h1 from the bottom of the curing tank D of the first concentration meter 20c1 used to determine the start of carbon dioxide supply is higher than and approximately the same as the height hc of the concrete C.

[0044] When it is desired to minimize the amount of carbon dioxide stored inside the curing tank D, it is preferable to terminate the supply of carbon dioxide at a height higher than the height hc of the concrete C and as close as possible to the height hc of the concrete C. In this case, it is preferable that the height of the concentration meter used to determine the end of the carbon dioxide supply from the bottom surface of the curing tank D be higher than the height hc of the concrete C and as close as possible to the height hc of the concrete C.

[0045] If priority is given to reducing the frequency of carbon dioxide supply into the curing tank D and reducing the amount of management effort, rather than the amount of carbon dioxide fixed in the concrete C, it is preferable to start the supply of carbon dioxide when the carbon dioxide level has decreased to near the bottom of the concave portion of the curing tank D. In this case, it is preferable that the height of the concentration meter used to determine the start of carbon dioxide supply from the bottom of the curing tank D is lower than the height hc of the concrete C. In a third modified example described below, the height h3 of the third concentration meter 20c3 used to determine the start of carbon dioxide supply from the bottom of the curing tank D is set lower than the height hc of the concrete C.

[0046] If priority is given to reducing the frequency of supplying carbon dioxide into the curing tank D and reducing the amount of management work, rather than the amount of carbon dioxide fixed in the concrete C, it is preferable to stop the supply of carbon dioxide after the carbon dioxide concentration near the ground G in the curing tank D has reached a sufficient concentration. In this case, the procedure is the same as when it is desired to fix carbon dioxide sufficiently also in the upper part of the concrete C, and therefore a description thereof will be omitted.

[0047] The arrangement of the carbon dioxide concentration measuring unit 20c according to this embodiment will now be described in detail. The first concentration meter 20c1 is arranged inside the curing tank D at a height h1 that is higher than the height h3 of the third concentration meter 20c3 and lower than the height h2 of the second concentration meter 20c2 and the ground G. The second concentration meter 20c2 is arranged inside the curing tank D at a height h2 that is higher than the height h1 of the first concentration meter 20c1 and the height h3 of the third concentration meter 20c3 and lower than the ground G. The third concentration meter 20c3 is arranged inside the curing tank D at a height h3 that is lower than the height h1 of the first concentration meter 20c1, the height h2 of the second concentration meter 20c2, and the ground G.

[0048] Therefore, the measurement unit 20 according to this embodiment can measure the carbon dioxide concentration at three different heights: height h1, height h2, and height h3. The measurement unit 20 is not limited to this, and may be able to measure the carbon dioxide concentration at four or more different height directions, or may be able to measure the carbon dioxide concentration at two or less different heights.

[0049] The control device 30 is configured to perform various controls of the concrete carbonation curing system S. For example, the control device 30 controls the adjustment unit 10 based on the measurement results of the measurement unit 20. An example of the hardware configuration of the control device 30 will be described with reference to FIG. 2. As shown in FIG. 2, the control device 30 includes a processor 300, a ROM (Read Only Memory) 301, a RAM (Random Access Memory) 302, a bus 303, an input / output interface 304, an input unit 305, an output unit 306, an auxiliary storage device 307, a communication unit 308, and a power supply 309.

[0050] The processor 300 is a central part of a computer that performs various calculations, controls, and other processes required for the operation of the control device 30. The processor 300 is, for example, a central processing unit (CPU), a micro processing unit (MPU), a system on a chip (SoC), a digital signal processor (DSP), a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field-programmable gate array (FPGA). Alternatively, the processor 300 may be a combination of two or more of these. The processor 300 may also be a combination of these with a hardware accelerator or the like.

[0051] The processor 300 controls each unit to realize various functions of the control device 30 based on programs such as firmware, system software, and application software stored in the ROM 301, RAM 302, etc. The processor 300 executes processing based on the programs. Note that part or all of the programs may be incorporated into the circuitry of the processor 300.

[0052] The processor 300, ROM 301, and RAM 302 are connected to one another via a bus 303. An input / output interface 304 is also connected to this bus 303. An input unit 305, an output unit 306, an auxiliary storage device 307, a communication unit 308, and a power supply 309 are connected to the input / output interface 304.

[0053] The input unit 305 and output unit 306 are user interfaces electrically connected to the input / output interface 304 via wire or wirelessly. The input unit 305 is composed of, for example, a keyboard, a mouse, etc., and inputs various information in response to user instructions. The output unit 306 is composed of, for example, a display for displaying images and a speaker for amplifying audio, and outputs images and audio.

[0054] The auxiliary storage device 307 is configured with an HDD (Hard Disk Drive), an SSD (Solid State Drive), etc. The auxiliary storage device 307 stores various information such as programs related to various processes and setting values. The auxiliary storage device 307 stores various information such as judgment reference values ​​for concrete quality judgment processing, temperature and humidity judgment processing, and carbon dioxide supply judgment processing, as well as programs.

[0055] The communication unit 308 is a device that allows the processor 300 to communicate with other devices (for example, the adjustment unit 10 and the measurement unit 20) via a network (not shown). The communication unit 308 may also be able to communicate with an administrator terminal (not shown) for an external administrator via the network.

[0056] The power supply 309 is configured to be connected to an external power supply so as to be able to supply power to each unit of the control device 30. Note that the configuration capable of supplying power to the power supply is not limited to this, and may be, for example, a battery.

[0057] Next, a description will be given of the functional configuration of the control device 30. The control unit 310, which is a functional configuration of the control device 30 that executes various controls of the control device 30, is realized by the processor 300 that executes arithmetic processing by executing programs stored in the ROM 301, RAM 302, auxiliary storage device 307, etc.

[0058] As shown in FIG. 3 , the control unit 310 of this embodiment has a measurement result acquisition unit (measurement result acquisition function as a function for acquiring information about the inside of the curing tank) 311 as a unit for acquiring information about the inside of the curing tank, a temperature and humidity determination unit (temperature and humidity determination function) 312, a temperature and humidity control unit (temperature and humidity control function) 313, a carbon dioxide supply determination unit (carbon dioxide supply determination function) 314, a carbon dioxide supply control unit (carbon dioxide supply function) 315, a material age information acquisition unit (material age information acquisition function) 316, and a concrete quality determination unit (concrete quality determination function) 317.

[0059] The measurement result acquisition unit 311 executes a process of acquiring the measurement results measured by the measurement unit 20 via the communication unit 308. For example, the measurement result acquisition unit 311 executes a process of acquiring temperature information measured by the temperature sensor 20a of the measurement unit 20 via the communication unit 308. The measurement result acquisition unit 311 executes a process of acquiring humidity information measured by the humidity sensor 20b of the measurement unit 20 via the communication unit 308. The measurement result acquisition unit 311 executes a process of acquiring carbon dioxide concentration information measured by the carbon dioxide concentration measurement unit 20c of the measurement unit 20 via the communication unit 308.

[0060] As described above, the carbon dioxide concentration information measured by carbon dioxide concentration measurement unit 20c may include carbon dioxide concentration information from at least one of first concentration meter 20c1, second concentration meter 20c2, and third concentration meter 20c3.

[0061] The temperature and humidity determination unit 312 determines whether the temperature measured by the temperature sensor 20a of the measurement unit 20 is within a preset range. The temperature and humidity determination unit 312 determines whether the humidity measured by the humidity sensor 20b of the measurement unit 20 is within a preset range. As mentioned above, the humidity here may be either relative humidity or absolute humidity.

[0062] The temperature and humidity control unit 313 controls the temperature and humidity adjustment operation of the adjustment unit 10 based on the determination result by the temperature and humidity determination unit 312. For example, when the temperature and humidity determination unit 312 determines that the measurement result by the temperature sensor 20a of the measurement unit 20 is a temperature lower than a preset range, the temperature and humidity control unit 313 controls the temperature and humidity adjustment unit 11 of the adjustment unit 10 to heat the inside of the curing tank D. For example, when the temperature and humidity determination unit 312 determines that the measurement result by the humidity sensor 20b of the measurement unit 20 is a humidity higher than a preset range, the temperature and humidity control unit 313 controls the temperature and humidity adjustment unit 11 of the adjustment unit 10 to dehumidify the inside of the curing tank D.

[0063] The carbon dioxide supply determination unit 314 determines whether or not to start supplying carbon dioxide into the inside of the curing tank D based on the measurement results acquired by the measurement result acquisition unit 311. Specifically, the carbon dioxide supply determination unit 314 according to this embodiment determines that supplying carbon dioxide into the inside of the curing tank D should be started when the measurement result of the carbon dioxide concentration by the first concentration meter 20c1 becomes less than a first concentration.

[0064] The carbon dioxide supply determination unit 314 determines whether or not to terminate the supply of carbon dioxide into the curing tank D based on the measurement results acquired by the measurement result acquisition unit 311. The carbon dioxide supply determination unit 314 according to this embodiment determines that the supply of carbon dioxide into the curing tank D should be terminated when the measurement result of the carbon dioxide concentration by the second concentration meter 20c2 becomes equal to or greater than a first concentration. The first concentration is set to a carbon dioxide concentration suitable for carbonation curing. The first concentration may be, for example, 20% carbon dioxide. Note that the higher the carbon dioxide concentration, the faster the carbonation rate.

[0065] The carbon dioxide supply control unit 315 controls the carbon dioxide supply unit 12 based on the measurement results acquired by the measurement result acquisition unit 311. Specifically, when the carbon dioxide supply determination unit 314 determines, based on the measurement results acquired by the measurement result acquisition unit 311, that the supply of carbon dioxide into the interior of the curing tank D should be started, the carbon dioxide supply control unit 315 controls the carbon dioxide supply unit 12 to start supplying carbon dioxide. When the carbon dioxide supply determination unit 314 determines that the supply of carbon dioxide into the interior of the curing tank D should be stopped, the carbon dioxide supply control unit 315 controls the carbon dioxide supply unit 12 to stop supplying carbon dioxide.

[0066] The material age information acquisition unit 316 executes a material age information management process for managing material age information and a material age information acquisition process for acquiring concrete age information. In the material age information management process, the material age information acquisition unit 316 executes a process for storing the timing when carbonation curing started, acquiring the time since the start of carbonation curing as the material age, and storing it in the auxiliary storage device 307. The material age information acquisition unit 316 executes the material age information acquisition process during the concrete quality determination process by the concrete quality determination unit 317, which will be described later, and acquires the material age information stored in the auxiliary storage device 307.

[0067] The concrete quality determination unit 317 executes a process for determining the quality of the concrete C placed inside the curing tank D. For example, the concrete quality determination unit 317 calculates an estimated amount of carbon dioxide fixed in the concrete, and determines whether the estimated amount exceeds a predetermined amount. The predetermined amount can be an amount according to the quality required for the concrete C.

[0068] The estimated amount of carbon dioxide fixed in the concrete is calculated using the relational expression described below. For example, the concrete quality determination unit 317 calculates the estimated amount of carbon dioxide fixed in the concrete C inside the curing tank D based on the temperature measured by the temperature sensor 20a, the relative humidity measured by the humidity sensor 20b, the carbon dioxide concentration measured by the carbon dioxide concentration measurement unit 20c, and the concrete age information acquired by the age information acquisition unit 316. When the absolute humidity is measured by the humidity sensor 20b, the concrete quality determination unit 317 calculates the estimated amount of carbon dioxide fixed in the concrete C inside the curing tank D based on the temperature measured by the temperature sensor 20a, the absolute humidity measured by the humidity sensor 20b, the carbon dioxide concentration measured by the carbon dioxide concentration measurement unit 20c, and the concrete age information acquired by the age information acquisition unit 316. The concrete quality determination unit 317 determines the quality of the concrete C based on the calculated estimated amount.

[0069] In this embodiment, the interior of the curing tank D is used as the curing space, and the carbonation depth of the concrete C is calculated using the following relational equation between the temperature, humidity, and carbon dioxide concentration of the curing space, the age of the concrete, and the estimated amount of carbon dioxide fixed in the concrete. Note that although the following equation shows relative humidity, absolute humidity may also be used.

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[0070] In the formula 1, d represents the carbonation depth (mm). humrepresents the humidity correction coefficient, which is calculated using Equation 2. In Equation 2, H represents the humidity (%) of the curing space. temp represents the temperature correction coefficient, which is calculated using Equation 3. In Equation 3, T represents the temperature (°C) of the curing space. CO2 represents the carbon dioxide concentration correction coefficient, which is calculated using Equation 4. C in Equation 4 represents the carbon dioxide concentration (%). K age represents the material age correction coefficient, and is calculated using Equation 5. A in Equation 5 represents the material age (days). t in Equation 1 represents the curing period (days). K in Equation 1 r indicates the carbonation rate at a temperature of 50°C, humidity of 40%, and carbon dioxide concentration of 15%. r is measured in advance.

[0071] The carbonation rate is measured by measuring the carbonation depth and dividing the measured value by the 1 / 2 power of the curing period. The carbonation depth is measured in accordance with JISA1152 "Method for measuring the carbonation depth of concrete."

[0072] The estimated amount of carbon dioxide fixed in concrete C is calculated by multiplying the carbonation depth d of carbon dioxide fixed in concrete C calculated using the above relational expression by the surface area of ​​concrete C. However, the method of calculating the estimated amount of carbon dioxide fixed in concrete C is not limited to this.

[0073] Therefore, the measurement results of the inside of the curing tank D by the measurement unit 20 include the temperature measurement result by the temperature sensor 20a, the relative humidity measurement result by the humidity sensor 20b, and the carbon dioxide concentration measurement result by the carbon dioxide concentration measurement unit 20c inside the curing tank D. When the absolute humidity is measured by the humidity sensor 20b, the measurement results of the inside of the curing tank D by the measurement unit 20 include the temperature measurement result by the temperature sensor 20a, the absolute humidity measurement result by the humidity sensor 20b, and the carbon dioxide concentration measurement result by the carbon dioxide concentration measurement unit 20c inside the curing tank D.

[0074] The concrete quality determination unit 317 determines the quality of the concrete C based on whether the calculated amount of carbon dioxide fixed in the concrete C exceeds a predetermined amount. More specifically, if the amount of carbon dioxide fixed in the concrete C is equal to or greater than the predetermined amount, the concrete quality determination unit 317 determines that the quality of the concrete C is acceptable. If the amount of carbon dioxide fixed in the concrete C is less than the predetermined amount, the concrete quality determination unit 317 determines that the quality of the concrete C is unacceptable. The concrete quality determination process will be described later.

[0075] When the concrete quality determination unit 317 determines that the quality of the concrete C is acceptable, it executes a process of outputting the result. For example, when the concrete quality determination unit 317 determines that the quality of the concrete C is acceptable, it may output information that the quality of the concrete C is acceptable to the display or speaker of the output unit 306. The display or speaker of the output unit 306 notifies the user that the quality of the concrete C is acceptable.

[0076] Furthermore, when the concrete quality determination unit 317 determines that the quality of the concrete C is acceptable, it may output and store quality acceptance information of the concrete C in the auxiliary storage device 307. In the temperature and humidity control process and carbon dioxide amount determination described below, the control unit 310 can check the quality acceptance information of the concrete C stored in the auxiliary storage device 307 and end the process when the quality of the concrete C is accepted.

[0077] <Concrete carbonation curing method> Next, the concrete carbonation curing method according to this embodiment will be described with reference to Fig. 4. The concrete carbonation curing method includes a placing step (step S10), a concrete carbonation curing step (step S11), and a removing step (step S12).

[0078] The placing step (step S10) is a step of placing the concrete C on which the manufactured precast concrete or the like has been placed inside the curing tank D. Here, attention must be paid to the relationship between the height of the concrete C and the height of the carbon dioxide concentration meter from the bottom of the curing tank D, which is used to determine the amount of carbon dioxide supply in the carbon dioxide amount determination process. For example, if it is desired to set the carbon dioxide concentration around the entire concrete C to 20%, and the determination value of the carbon dioxide concentration meter is set to 20%, the height of the concrete must be lower than the height of the carbon dioxide concentration meter from the bottom of the curing tank D, which is used for the determination.

[0079] Therefore, in this embodiment, the concrete C is placed inside the curing tank D such that the height hc of the concrete C is lower than the height h1 of the first concentration meter 20c1.

[0080] The concrete carbonation curing process (step S11) is a process in which the concrete carbonation curing system S carbonates and cures the concrete C placed inside the curing tank D by the temperature and humidity adjustment operation and carbon dioxide supply operation of the adjustment unit 10. Furthermore, in the concrete carbonation curing process (step S11), the concrete carbonation curing system S determines the quality of the concrete C to be carbonated and cured.

[0081] Therefore, the control device 30 of the concrete carbonation curing system S executes a concrete quality assessment process, a temperature and humidity adjustment process, and a carbon dioxide supply process, which will be described later, in the concrete carbonation curing step (step S11). As a result, the inside of the curing tank D becomes an environment suitable for carbonation curing, and the placed concrete C is efficiently carbonated and cured.

[0082] The unloading step (step S12) is a step of unloading the concrete C placed in the curing tank D. In this embodiment, the unloading step (step S12) is performed, for example, when the quality of the concrete C passes the concrete quality assessment process in the concrete carbonation curing step (step S11). However, the unloading step is not limited to this, and the concrete C may be unloaded after a preset storage period has elapsed, or may be unloaded according to a delivery date.

[0083] <Concrete quality assessment process> Next, the concrete quality determination process will be described using the flowchart shown in Fig. 5. When the concrete quality determination process is executed, as shown in Figs. 2 and 3, in processor 300, a measurement result acquisition unit 311 serving as a curing tank internal information acquisition unit, a material age information acquisition unit 316, and a concrete quality determination unit 317 function.

[0084] The concrete quality determination process is executed in the concrete carbonation curing step (step S11). The concrete quality determination process is executed periodically at predetermined intervals from the start of the concrete carbonation curing system S. The predetermined time is, for example, one hour.

[0085] First, the measurement result acquisition unit 311 acquires the measurement results measured by the measurement unit 20 via the communication unit 308 (step S20). Next, the material age information acquisition unit 316 acquires material age information of the concrete C, and the concrete quality determination unit 317 determines the quality of the concrete C based on the information on the temperature, relative humidity, and carbon dioxide concentration inside the curing tank D acquired by the measurement result acquisition unit 311 and the material age information acquired by the material age information acquisition unit 316 (step S21). Note that when absolute humidity is measured by the humidity sensor 20b, the concrete quality determination unit 317 determines the quality of the concrete C based on the information on the temperature, absolute humidity, and carbon dioxide concentration inside the curing tank D acquired by the measurement result acquisition unit 311 and the material age information acquired by the material age information acquisition unit 316 (step S21).

[0086] If the concrete quality determination unit 317 determines that the concrete C is not acceptable (step S21: NO), the control unit 310 waits for a predetermined time (step S23) and proceeds to step S20. On the other hand, if the concrete quality determination unit 317 determines that the concrete C is acceptable in step S21 (step S21: YES), the concrete quality determination unit 317 outputs information that the concrete C is acceptable to the auxiliary storage device 307 for storage, and outputs this information to the display or speaker of the output unit 306 (step S22), and ends the concrete quality determination process.

[0087] <Temperature and humidity adjustment processing> Next, the temperature and humidity adjustment process will be described using the flowchart shown in Fig. 6. When the temperature and humidity adjustment process is executed, the measurement result acquisition unit 311, temperature and humidity determination unit 312, and temperature and humidity control unit 313 function in the processor 300 as shown in Figs. 2 and 3. The temperature and humidity adjustment process is executed in the concrete carbonation curing step (step S11).

[0088] First, the measurement result acquisition unit 311, which serves as a curing tank internal information acquisition unit, acquires the measurement results from the measurement unit 20 via the communication unit 308 (step S30, curing tank internal information acquisition step). Next, the temperature and humidity determination unit 312 determines whether the relative humidity inside the curing tank D is within a preset humidity range (step S31). When the absolute humidity is measured by the humidity sensor 20b, the temperature and humidity determination unit 312 determines whether the relative humidity inside the curing tank D is within a preset humidity range (step S31).

[0089] If the relative humidity inside the curing tank D is outside the preset humidity range (step S31: NO), the temperature and humidity control unit 313 starts humidity adjustment control (step S32) and continues until the relative humidity inside the curing tank D falls within the preset humidity range, and then transitions the process to step S33. On the other hand, if the relative humidity inside the curing tank D is within the preset humidity range in step S31 (step S31: YES), the temperature and humidity determination unit 312 determines whether the temperature inside the curing tank D is within the preset temperature range (step S33).

[0090] When the absolute humidity is measured by the humidity sensor 20b, if the absolute humidity inside the curing tank D is outside the preset humidity range (step S31: NO), the temperature and humidity control unit 313 starts humidity adjustment control (step S32) and continues until the absolute humidity inside the curing tank D falls within the preset humidity range, and then transitions to step S33. On the other hand, if the absolute humidity inside the curing tank D is within the preset humidity range in step S31 (step S31: YES), the temperature and humidity determination unit 312 determines whether the absolute temperature inside the curing tank D is within the preset temperature range (step S33).

[0091] If the temperature inside the curing tank D is outside the preset temperature range (step S33: NO), the temperature and humidity control unit 313 starts temperature adjustment control (step S34) and continues until the temperature inside the curing tank D falls within the preset temperature range, and then proceeds to step S35. On the other hand, if the temperature inside the curing tank D is within the preset temperature range in step S33 (step S33: YES), the temperature and humidity determination unit 312 checks the information on the quality of the concrete C that is passed by the concrete quality determination unit 317 stored in the auxiliary storage device 307, and determines whether the quality of the concrete C is passed in step S22 of the concrete quality determination process (step S35).

[0092] If the concrete quality determination unit 317 has determined that the quality of the concrete C is not acceptable in step S22 of the concrete quality determination process (step S35: NO), the control unit 310 transitions the process to step S30 and repeats the above process until the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable. On the other hand, if the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable in step S35 of the concrete quality determination process (step S35: YES), the control unit 310 ends the temperature and humidity adjustment process.

[0093] <Carbon dioxide supply treatment> Next, the carbon dioxide supply process will be described using the flowchart shown in Fig. 7. When the carbon dioxide supply process is executed, a measurement result acquisition unit 311, a carbon dioxide supply determination unit 314, and a carbon dioxide supply control unit 315 function in the processor 300 as shown in Figs. 2 and 3. The carbon dioxide supply process is executed in the concrete carbonation curing step (step S11).

[0094] First, measurement result acquisition unit 311, which serves as a curing tank internal information acquisition unit, acquires the measurement result by first concentration meter 20c1 via communication unit 308 (step S40, curing tank internal information acquisition step). Next, carbon dioxide supply determination unit 314 determines whether the measurement result by first concentration meter 20c1 acquired by measurement result acquisition unit 311 is equal to or greater than the first concentration (step S41).

[0095] If the measurement result obtained by measurement result obtaining unit 311 using first concentration meter 20c1 is less than the first concentration (step S41: NO), carbon dioxide supply control unit 315 causes carbon dioxide supply unit 12 to supply carbon dioxide (step S42). Next, measurement result obtaining unit 311 obtains the measurement result using second concentration meter 20c2 (step S43). Next, carbon dioxide supply determination unit 314 checks whether the measurement result using second concentration meter 20c2 is equal to or greater than the first concentration (step S44). If the measurement result using second concentration meter 20c2 is less than the first concentration (step S44: NO), control unit 310 transitions to step S43 and repeats the process until the measurement result using second concentration meter 20c2 is equal to or greater than the first concentration.

[0096] On the other hand, if the measurement result by second concentration meter 20c2 is equal to or greater than the first concentration (step S44: YES), carbon dioxide supply control unit 315 ends the supply of carbon dioxide (step S45) and moves the process to step S46.

[0097] In step S41, if the measurement result obtained by the measurement result obtaining unit 311 using the first concentration meter 20c1 is equal to or greater than the first concentration (step S41: YES), the control unit 310 proceeds to step S46. In step S46, the carbon dioxide supply determination unit 314 checks the information on the quality of the concrete C that is acceptable by the concrete quality determination unit 317 stored in the auxiliary storage device 307, and determines whether the quality of the concrete C is acceptable in step S22 of the concrete quality determination process (step S46).

[0098] If the concrete quality determination unit 317 has determined that the quality of the concrete C is not acceptable in step S22 of the concrete quality determination process (step S46: NO), the control unit 310 transitions the process to step S40 and repeats the above process until the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable in step S22 of the concrete quality determination process. On the other hand, if the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable in step S46 of the concrete quality determination process (step S46: YES), the control unit 310 ends the carbon dioxide supply process.

[0099] The concrete carbonation curing system S according to the present embodiment described above provides the following advantages. Conventionally, a method has been known in which the concrete is surrounded by tent fabric or the like, and a carbon dioxide atmosphere is created while controlling the temperature and humidity inside the space, thereby fixing carbon dioxide from outside the concrete. In the case of tents, buildings, etc., carbon dioxide is prone to leaking, and the cost of supplying carbon dioxide to make up for the leaked carbon dioxide or taking measures to prevent carbon dioxide leaks into tents, buildings, etc. has been high.

[0100] Here, instead of the tent-type curing tanks used until now, a system has been devised in which a dug-type space is installed underground or elsewhere as a warehouse to prevent air leakage, and carbon dioxide is supplied to the warehouse to maintain a high concentration of carbon dioxide. The warehouse also controls at least one of the temperature and humidity. Because the warehouse has a simple structure that involves simply carving into the floor or ground surface inside the building, initial costs can be kept low. Therefore, precast products can be manufactured as usual, and then stored in the dug-type warehouse, the underground space of which is filled with carbon dioxide, until shipment, allowing for carbonation curing.

[0101] As the concrete stored in the warehouse absorbs and fixes carbon dioxide, the carbon dioxide in the space gradually decreases. The carbon dioxide concentration is managed using multiple carbon dioxide concentration meters arranged vertically, and carbon dioxide is supplied when the carbon dioxide level starts to decrease. Because carbon dioxide leakage is suppressed in the warehouse, the frequency of carbon dioxide supply decreases, reducing the effort and cost of management. Information on temperature, humidity, and carbon dioxide concentration used in managing carbon dioxide curing in the warehouse can also be used to manage the amount of carbon dioxide fixed in the concrete and to assess the quality of the concrete.

[0102] <First Modification> The carbon dioxide supply determination unit 314 according to the above embodiment determines that the supply of carbon dioxide into the curing tank D should be started when the measurement result of the carbon dioxide concentration by the first concentration meter 20c1 becomes less than the first concentration. The carbon dioxide supply determination unit 314 according to the above embodiment determines that the supply of carbon dioxide into the curing tank D should be stopped when the measurement result of the carbon dioxide concentration by the second concentration meter 20c2 becomes equal to or greater than the first concentration. That is, the carbon dioxide supply determination unit 314 according to the above embodiment uses the measurement result of the first concentration meter 20c1 to determine whether or not to start the supply of carbon dioxide, and uses the measurement result of the second concentration meter 20c2 to determine whether or not to stop the supply of carbon dioxide. However, this is not limited to this.

[0103] For example, the carbon dioxide supply determination unit 314 according to the above-described embodiment may use the measurement result of the first concentration meter 20c1 to determine whether to start or stop the supply of carbon dioxide and whether to stop the supply of carbon dioxide. That is, the carbon dioxide supply determination unit 314 may determine that the supply of carbon dioxide into the curing tank D should be started when the measurement result of the carbon dioxide concentration by the first concentration meter 20c1 is less than a first concentration, and may determine that the supply of carbon dioxide into the curing tank D should be stopped when the measurement result of the first concentration meter 20c1 is equal to or greater than a second concentration higher than the first concentration. The second concentration may be, for example, 30% carbon dioxide. Increasing the difference between the first concentration and the second concentration reduces the frequency of carbon dioxide supply, thereby reducing management effort and costs.

[0104] By making such a determination, the number of concentration sensors used in the carbon dioxide supply process can be reduced, thereby further reducing costs. The carbon dioxide supply process according to this modification will be described below with reference to Fig. 8. Note that the same components as those in the above-described embodiment will be assigned the same reference numerals and their description may be omitted.

[0105] <Carbon dioxide supply treatment> Here, the carbon dioxide supply process according to the first modified example will be described with reference to the flowchart shown in Fig. 8. When the carbon dioxide supply process is executed, a measurement result acquisition unit 311, a carbon dioxide supply determination unit 314, and a carbon dioxide supply control unit 315 function in the processor 300 as shown in Figs.

[0106] First, measurement result acquisition unit 311 acquires the measurement result from first concentration meter 20c1 via communication unit 308 (step S50). Next, carbon dioxide supply determination unit 314 determines whether the measurement result from first concentration meter 20c1 acquired by measurement result acquisition unit 311 is equal to or greater than the first concentration (step S51).

[0107] If the measurement result obtained by measurement result obtaining unit 311 using first concentration meter 20c1 is less than the first concentration (step S51: NO), carbon dioxide supply control unit 315 causes carbon dioxide supply unit 12 to supply carbon dioxide (step S52). Next, measurement result obtaining unit 311 obtains the measurement result using first concentration meter 20c1 (step S53). Next, carbon dioxide supply determination unit 314 checks whether the measurement result using first concentration meter 20c1 is equal to or greater than the second concentration (step S54). If the measurement result using first concentration meter 20c1 is less than the second concentration (step S54: NO), control unit 310 transitions to step S53 and repeats the process until the measurement result using first concentration meter 20c1 is equal to or greater than the second concentration.

[0108] On the other hand, if the measurement result by first concentration meter 20c1 is equal to or greater than the second concentration (step S54: YES), carbon dioxide supply control unit 315 ends the supply of carbon dioxide (step S55) and moves the process to step S56.

[0109] In step S51, if the measurement result obtained by the measurement result obtaining unit 311 using the first concentration meter 20c1 is equal to or greater than the first concentration (step S51: YES), the control unit 310 proceeds to step S56. In step S56, the carbon dioxide supply determining unit 314 checks the information on the quality of the concrete C that is passed by the concrete quality determining unit 317 stored in the auxiliary storage device 307 to determine whether the quality of the concrete C is passed (step S56).

[0110] If the concrete quality determination unit 317 has determined that the quality of the concrete C is not acceptable in step S22 of the concrete quality determination process (step S56: NO), the control unit 310 transitions the process to step S50 and repeats the above process until the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable in step S22 of the concrete quality determination process. On the other hand, if the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable in step S56 of the concrete quality determination process (step S56: YES), the control unit 310 ends the carbon dioxide supply process.

[0111] <Second Modification> The carbon dioxide supply determination unit 314 according to the above embodiment determines that the supply of carbon dioxide into the curing tank D should be started when the measurement result of the carbon dioxide concentration by the first concentration meter 20c1 is less than the first concentration. The carbon dioxide supply determination unit 314 according to the above embodiment determines that the amount of carbon dioxide inside the curing tank D is sufficient when the measurement result of the carbon dioxide concentration by the second concentration meter 20c2 is equal to or greater than the first concentration. That is, the carbon dioxide supply determination unit 314 according to the above embodiment uses the measurement result of the first concentration meter 20c1 to determine whether or not the supply of carbon dioxide should be started, and uses the measurement result of the second concentration meter 20c2 to determine whether or not the supply of carbon dioxide should be terminated. However, this is not limited to this.

[0112] For example, the carbon dioxide supply determination unit 314 according to the above-described embodiment may use the measurement result of the third concentration meter 20c3 to determine whether or not to start the supply of carbon dioxide, and may use the measurement result of the second concentration meter 20c2 to determine whether or not to end the supply of carbon dioxide. That is, the carbon dioxide supply determination unit 314 may determine that the supply of carbon dioxide into the curing tank D should be started when the measurement result of the carbon dioxide concentration by the third concentration meter 20c3 is less than the first concentration, and may determine that the supply of carbon dioxide into the curing tank D should be ended when the measurement result of the second concentration meter 20c2 is equal to or greater than the first concentration.

[0113] By making such a determination, the frequency of carbon dioxide supply can be reduced, and management costs can be further reduced. The carbon dioxide supply process according to this modification will be described below with reference to Fig. 9. Note that the same components as those in the above-described embodiment will be assigned the same reference numerals and descriptions thereof may be omitted.

[0114] <Carbon dioxide supply treatment> Here, the carbon dioxide supply process according to the second modified example will be described with reference to the flowchart shown in Fig. 9. When the carbon dioxide supply process is executed, a measurement result acquisition unit 311, a carbon dioxide supply determination unit 314, and a carbon dioxide supply control unit 315 function in the processor 300 as shown in Figs.

[0115] First, the measurement result acquisition unit 311 acquires the measurement result from the third concentration meter 20c3 via the communication unit 308 (step S60). Next, the carbon dioxide supply determination unit 314 determines whether the measurement result from the third concentration meter 20c3 acquired by the measurement result acquisition unit 311 is equal to or greater than the first concentration (step S61).

[0116] If the measurement result obtained by measurement result obtaining unit 311 from third concentration meter 20c3 is less than the first concentration (step S61: NO), carbon dioxide supply control unit 315 causes carbon dioxide supply unit 12 to supply carbon dioxide (step S62). Next, measurement result obtaining unit 311 obtains the measurement result from second concentration meter 20c2 (step S63). Next, carbon dioxide supply determination unit 314 checks whether the measurement result from second concentration meter 20c2 is equal to or greater than the first concentration (step S64). If the measurement result from second concentration meter 20c2 is less than the first concentration (step S64: NO), control unit 310 transitions to step S63 and repeats the process until the measurement result from second concentration meter 20c2 is equal to or greater than the first concentration.

[0117] On the other hand, if the measurement result by second concentration meter 20c2 is equal to or greater than the first concentration (step S64: YES), carbon dioxide supply control unit 315 ends the supply of carbon dioxide (step S65) and moves the process to step S66.

[0118] In step S61, if the measurement result obtained by the measurement result obtaining unit 311 using the third concentration meter 20c3 is equal to or greater than the first concentration (step S61: YES), the control unit 310 proceeds to step S66. In step S66, the carbon dioxide supply determining unit 314 checks the information on the quality of the concrete C that is passed by the concrete quality determining unit 317 and stored in the auxiliary storage device 307, to determine whether the quality of the concrete C is passed (step S66).

[0119] If the concrete quality determination unit 317 has determined that the quality of the concrete C is not acceptable in step S22 of the concrete quality determination process (step S66: NO), the control unit 310 transitions the process to step S60 and repeats the above process until the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable in step S22 of the concrete quality determination process. On the other hand, if the concrete quality determination unit 317 has determined that the quality of the concrete C is acceptable in step S66 of the concrete quality determination process (step S66: YES), the control unit 310 ends the carbon dioxide supply process.

[0120] <Third Modification> In the above-described embodiment, the adjusting unit 10 has the temperature and humidity adjusting unit 11 and the carbon dioxide supplying unit 12 as separate components, but this is not limited to this. For example, as shown in Figures 10 to 12, the adjusting unit 10B of the concrete carbonation curing system SB according to the third modified example may be capable of supplying a gas containing carbon dioxide, the temperature or humidity of which has been adjusted, to the inside of the curing tank D. Note that components similar to those in the above-described embodiment may be assigned the same reference numerals and descriptions thereof may be omitted.

[0121] In this case, the adjustment unit 10B includes a carbon dioxide cylinder (not shown) storing carbon dioxide, a concentration adjustment gas cylinder (not shown) storing a concentration adjustment gas, a supply flow rate adjuster, a known temperature adjuster (not shown), a known humidity adjuster (not shown), and a flow path connecting them. The concentration adjustment gas is, for example, nitrogen gas. The supply flow rate adjuster can adjust the supply flow rate of carbon dioxide from the carbon dioxide cylinder and the supply flow rate of the adjustment gas from the adjustment gas cylinder, and can supply carbon dioxide with an adjusted concentration to the gas in the flow path.

[0122] For example, when the adjustment unit 10B adjusts only either the temperature or the humidity, the supply flow rate adjustment device adjusts the supply rates of carbon dioxide gas and concentration adjustment gas and supplies them to the flow path so that the carbon dioxide concentration is the same as inside the curing tank D. The temperature adjustment device and humidity adjustment device adjust the temperature and humidity of the gas with the adjusted carbon dioxide concentration flowing through the flow path so that the temperature and humidity are predetermined. Therefore, the adjustment unit 10B can adjust at least one of the temperature and humidity inside the curing tank D by supplying gas with the adjusted temperature and humidity and carbon dioxide concentration to the inside of the curing tank D via the flow path.

[0123] The concrete carbonation curing system SB configured in this way has a simpler configuration, properly controls temperature and humidity, and more efficiently supplies carbon dioxide to carbonate and cure concrete, while reducing the cost and effort required for carbonation curing of concrete.

[0124] <Fourth Modification> The concrete carbonation curing system SC according to the above embodiment has the measurement unit 20 as a curing tank internal information acquisition unit capable of measuring the carbon dioxide concentration inside the curing tank D. However, the configuration of the concrete carbonation curing system SC is not limited to this. The concrete carbonation curing system SC may also have a curing tank internal information acquisition unit 20B having a carbon dioxide concentration determination unit 20Bc capable of determining the carbon dioxide concentration inside the curing tank D.

[0125] For example, the concrete carbonation curing system SC may have a carbon dioxide concentration determining unit 20Bc that includes a support and a balloon that can move along the support and has a specific gravity-adjusted gas injected inside. In this case, the carbon dioxide concentration determining unit 20Bc adjusts the weight and volume of the balloon itself and the specific gravity of the gas injected into the balloon so that the balloon floats in gas with a predetermined carbon dioxide concentration inside the curing tank D. When carbon dioxide is supplied by the adjusting unit 10C, the carbon dioxide concentration of the gas inside the curing tank D increases. The balloon floats when the carbon dioxide concentration of the gas inside the curing tank D reaches the predetermined carbon dioxide concentration.

[0126] In this way, the carbon dioxide concentration of the gas inside the curing tank D can be estimated from the position of the balloon, and the carbon dioxide concentration of the gas inside the curing tank D can be easily grasped visually. The concrete carbonation curing system SC according to this modified example will be described below with reference to Figures 13 and 14. Note that components similar to those in the above-described embodiment will be assigned the same reference numerals and their description may be omitted.

[0127] As shown in FIGS. 13 and 14, the concrete carbonation curing system SC according to the fourth modified example includes a curing tank D, an adjustment unit 10C, a curing tank internal information acquisition unit 20B, and a control device 30.

[0128] The curing tank internal information acquisition unit 20B according to the fourth modification is capable of acquiring carbon dioxide concentration information, temperature information, and humidity information indicating at least one of relative humidity and absolute humidity inside the curing tank D. In this modification, the carbon dioxide concentration information is position information of a balloon part B possessed by the curing tank internal information acquisition unit 20B, which rises due to buoyancy in the gas depending on the carbon dioxide concentration of the gas. The position information of the balloon part B can be said to be associated with the carbon dioxide concentration, and the height of the gas with a specific carbon dioxide concentration can be determined from the position of the balloon part B. As will be described later, the curing tank internal information acquisition unit 20B has a balloon part B and is capable of acquiring position information of the balloon part B associated with the carbon dioxide concentration.

[0129] As shown in FIGS. 13 and 14, the carbon dioxide concentration determining unit 20Bc according to this embodiment includes a balloon portion B, a support P, and a support member St.

[0130] The support pillar P is provided on the bottom surface of the curing tank D so as to extend vertically upward. The support pillar P is cylindrical and has a diameter smaller than the inner diameter of the annular balloon. The upper end of the support pillar P is preferably fixed to the ground G by a support member St. However, the upper end of the support pillar P does not have to be fixed by the support member St. The support member St is, for example, a plate-shaped metal member. However, the support member St is not limited to this.

[0131] The balloon portion B is composed of one or more balloons with adjusted specific gravity of the gas inside. The balloon portion B according to this modification has a first annular balloon B1, a second annular balloon B2, and a third annular balloon B3.

[0132] The first annular balloon B1 is an annular balloon whose weight, the volume of the gas to be injected, and the specific gravity are adjusted so that it floats in the gas having a first concentration of carbon dioxide inside the curing tank D. The first concentration indicates, for example, a carbon dioxide concentration that is insufficient for carbonation curing. During the supply of carbon dioxide, the supply of carbon dioxide continues when the carbon dioxide concentration inside the curing tank D is the first concentration.

[0133] The second annular balloon B2 is an annular balloon whose weight, the volume of the gas injected, and the specific gravity are adjusted so that it floats in the gas having a second carbon dioxide concentration inside the curing tank D. The second concentration indicates, for example, the minimum carbon dioxide concentration required for carbonation curing. During the supply of carbon dioxide, the supply of carbon dioxide is continued when the carbon dioxide concentration inside the curing tank D is the second concentration. Furthermore, after the supply of carbon dioxide, the supply of carbon dioxide is resumed when the carbon dioxide concentration inside the curing tank D is the second concentration.

[0134] The third annular balloon B3 is an annular balloon whose weight, the volume of the gas to be injected, and the specific gravity are adjusted so that it floats in the gas having a third concentration of carbon dioxide inside the curing tank D. The third concentration indicates, for example, a carbon dioxide concentration sufficient for carbonation curing. During the carbon dioxide supply, the carbon dioxide supply is stopped when the carbon dioxide concentration inside the curing tank D reaches the third concentration.

[0135] For example, the first concentration, the second concentration, and the third concentration are set to 2 to 10%, 20 to 60%, and 80% or more, respectively. Note that the first concentration, the second concentration, and the third concentration are not limited to the settings described above.

[0136] <How to adjust the specific gravity of the gas injected into the balloon> As an example of a method for adjusting the specific gravity of the gas injected into the balloon, a method for adjusting the specific gravity of the gas injected into the balloon so that the balloon floats when the carbon dioxide concentration inside the curing tank D is 80% under the following conditions will be described. Balloon specifications ·Weight: 2(g) Volume: 4 (l) Weight per unit volume of air: 1.2 (g / l) Weight of carbon dioxide per unit volume: 1.8 (g / l)

[0137] Under the above conditions, the weight of the gas inside the 4 L curing tank D is 4 × 1.2 (g / l) = 6.72 (g). Therefore, in this case, in order for the balloon to float in the gas of a given carbon dioxide concentration inside the curing tank D, the gas injected into the balloon must be less than 6.72 (g) - 2 (g) = 4.72 (g). In other words, the specific gravity of the gas injected into the balloon is adjusted to be less than 4.72 (g) ÷ 4 (l) = 1.18 (g / l). The specific gravity of the gas injected into the balloon may be adjusted, for example, by mixing a lighter gas such as helium gas with air.

[0138] By doing this, the buoyancy generated in the balloon exceeds the gravity acting on the balloon, allowing the balloon to float in the gas with the specified carbon dioxide concentration inside the curing tank D. At this time, the position of the balloon indicates the top of the area of ​​gas with a carbon dioxide concentration of 80%, and the worker can visually determine the carbon dioxide concentration inside the curing tank D from the position of the balloon.

[0139] The adjustment unit 10C according to the fourth modification includes a carbon dioxide cylinder (not shown) storing carbon dioxide, a supply flow rate adjusting device, a known temperature adjusting device (not shown), a known humidity adjusting device (not shown), and a flow path connecting them. As shown in FIGS. 13 and 14, the adjustment unit 10C includes a supply pipe 10C1 having an opening at one end located at the bottom of the curing tank D. Therefore, the adjustment unit 10C can supply high-concentration carbon dioxide whose temperature and humidity have been adjusted to the bottom of the curing tank D via the supply pipe 10C1.

[0140] <Method for determining carbon dioxide concentration> Here, a method for determining the carbon dioxide concentration in the carbonation curing of concrete according to the fourth modified example will be described. In the carbonation curing of concrete, it is necessary to control the carbon dioxide concentration so that the carbon dioxide reaches a predetermined concentration. However, as described above, as the concrete carbonates, the carbon dioxide inside the curing tank D is consumed and reduced, so it is necessary to monitor the carbon dioxide concentration inside the curing tank D and supply carbon dioxide according to the situation so that the carbon dioxide concentration does not fall below the concentration required for carbonation curing.

[0141] In this modified example, attention is focused on the fact that the weight per unit volume of carbon dioxide is heavier than the weight per unit volume of air, and as described above, a balloon whose weight and volume have been adjusted to be heavier than air but lighter than carbon dioxide is used to make it possible to check the carbon dioxide concentration inside the curing tank D.

[0142] For example, at the start of carbonation curing as shown in FIG. 13, when first concentration gas CG1 with a high carbon dioxide concentration is present only at the bottom of curing tank D and most of the interior of curing tank D is occupied by air, the first annular balloon B1, the second annular balloon B2, and the third annular balloon B3 of balloon section B are heavier than air and are therefore located at the bottom of curing tank D, as shown in FIG. 13.

[0143] As shown in Figure 14, when the carbon dioxide concentration inside the curing tank D increases due to the supply of carbon dioxide, the area of ​​the first concentration gas CG1 expands to the upper part of the curing tank D. The first annular balloon B1, which has a weight per unit volume lighter than the first concentration gas CG1, rises due to buoyancy. On the other hand, the second annular balloon B2 and the third annular balloon B3, which have a weight per unit volume heavier than the first concentration gas CG1, do not rise and remain at the bottom of the curing tank.

[0144] Furthermore, as the carbon dioxide supply increases the carbon dioxide concentration inside the curing tank D, the area of ​​the first concentration gas CG1 expands to the top of the curing tank D. The first annular balloon B1, which has a weight per unit volume lighter than the first concentration gas CG1, rises further due to buoyancy. Furthermore, the carbon dioxide supply increases the carbon dioxide concentration at the bottom of the curing tank D, and it becomes a second concentration gas CG2 with a second concentration. As the area of ​​the second concentration gas CG2 expands to the top of the curing tank D, the second annular balloon B2, which has a weight per unit volume lighter than the second concentration gas CG2, rises due to buoyancy. Meanwhile, the third annular balloon B3, which has a weight per unit volume heavier than the second concentration gas CG2, does not rise and remains at the bottom of the curing tank.

[0145] Furthermore, as the carbon dioxide supply increases, the carbon dioxide concentration inside the curing tank D increases, and the area of ​​the first concentration gas CG1 expands further upward in the curing tank D. The first annular balloon B1, which has a weight per unit volume lighter than the first concentration gas CG1, rises further due to buoyancy. Furthermore, as the carbon dioxide supply increases, the carbon dioxide concentration inside the curing tank D increases, and the area of ​​the second concentration gas CG2 expands further upward in the curing tank D. The second annular balloon B2, which has a weight per unit volume lighter than the second concentration gas CG2, rises further due to buoyancy. Furthermore, as the carbon dioxide supply increases, the carbon dioxide concentration at the bottom of the curing tank D increases, and it becomes a third concentration gas CG3 with a third concentration. As the area of ​​the third concentration gas CG3 expands upward in the curing tank D, the third annular balloon B3, which has a weight per unit volume lighter than the third concentration gas CG3, rises due to buoyancy.

[0146] 14, it can be seen that the gas inside the curing tank D below the position of the third annular balloon B3 is a third concentration gas CG3, which is a third concentration. Also, it can be seen that the gas inside the curing tank D above the position of the third annular balloon B3 and below the position of the second annular balloon is a second concentration gas CG2, which is a second concentration. Also, it can be seen that the gas inside the curing tank D above the position of the second annular balloon B2 and below the position of the first annular balloon B1 is a first concentration gas CG1, which is a first concentration.

[0147] This allows the concentration of carbon dioxide in the curing tank to be easily grasped visually by an operator, etc. For example, let the height from the bottom of curing tank D to the center position of the first annular balloon in the vertical direction be h11, the height from the bottom of curing tank D to the center position of the second annular balloon in the vertical direction be h12, and the height from the bottom of curing tank D to the center position of the third annular balloon in the vertical direction be h13.

[0148] As shown in Figure 13, after carbonation curing has started, when the height h11 of the first annular balloon exceeds the height hc of the concrete, it can be determined that the carbon dioxide concentration has increased but has not yet reached a level sufficient for carbonation curing. Therefore, while carbon dioxide is being supplied, if the carbon dioxide concentration inside the curing tank D is at the first concentration, the supply of carbon dioxide is continued.

[0149] After carbonation curing begins, when the height h12 of the second annular balloon exceeds the height hc of the concrete, the minimum carbon dioxide concentration required for carbonation curing is reached, and it can be determined that carbonation of concrete C has begun. However, as the carbon dioxide concentration has not yet reached a sufficient level, the supply of carbon dioxide continues.

[0150] After carbon dioxide is supplied, when the height h12 of the second annular balloon reaches the same height hc of the concrete, it can be determined that the carbon dioxide concentration has dropped to the minimum concentration required for carbonation curing. Therefore, carbon dioxide supply can be resumed.

[0151] After carbonation curing has started, when the height h13 of the third annular balloon exceeds the height hc of the concrete, it can be determined that the carbon dioxide concentration has reached a sufficient level for carbonation curing. Therefore, since a sufficient carbon dioxide concentration has been reached, the supply of carbon dioxide is stopped.

[0152] Therefore, in this modified example, the carbon dioxide concentration in the curing tank can be easily determined using a simpler method, and the costs and effort involved in concrete carbonation curing can be reduced.

[0153] In this modified example, the position of the balloon part B was visually confirmed to determine the carbon dioxide concentration inside the curing tank D, but this is not limited to this. The position of the balloon part B may be detected by a proximity sensor or touch sensor, etc., and the control device 30 may control the operation of the adjustment part 10C based on the detection information.

[0154] In addition, in the fourth modified example, the balloon section B has three balloons, namely, a first annular balloon B1, a second annular balloon B2, and a third annular balloon B3, which are capable of distinguishing the first concentration, the second concentration, and the third concentration, respectively. However, this is not limited to this, and it is preferable that the balloon section B has a number of balloons according to the type of concentration to be distinguished, and it may have two or less balloons, or four or more balloons.

[0155] <Modification> The process of determining the amount of carbon dioxide inside the curing tank D by the carbon dioxide supply determination unit 314 according to the above-described embodiment and modified example is merely an example and is not particularly limited. For example, the carbon dioxide supply determination unit 314 may determine whether or not to start the supply of carbon dioxide based on the measurement result of the third concentration meter 20c3, and may determine whether or not to end the supply of carbon dioxide based on the measurement result of the second concentration meter 20c2.

[0156] In the above-described embodiment, the adjustment unit 10 adjusts the temperature and humidity inside the curing tank D, but this is not limiting, and the adjustment unit 10 may adjust only either the temperature or the humidity. Even in this case, the configuration of the adjustment unit 10 can be simplified while efficiently immobilizing carbon dioxide in the concrete C, and the concrete C can be carbonation cured with reduced management effort and cost.

[0157] In the above-described embodiment, the concrete quality determination unit 317 calculates an estimated amount of carbon dioxide fixed in the concrete and determines whether the estimated amount exceeds a predetermined amount. However, this is not limited to this. For example, the concrete quality determination unit 317 may calculate an estimated amount of carbon dioxide fixed in the concrete and output information about the calculated estimated amount of carbon dioxide to the display or speaker of the output unit 306 without determining the quality, or may transmit the information to an external manager's terminal or the like via the communication unit 308. A worker or the like who confirms the information about the estimated amount from the display or speaker of the output unit 306 or the manager's terminal or the like may determine whether to end the concrete carbonation curing process (step S11) and start the removal process (step S12).

[0158] Although several embodiments of the present invention have been described above, these embodiments are merely illustrative and do not limit the technical scope of the present invention. The present invention can take on various other embodiments, and various modifications such as omissions and substitutions can be made without departing from the spirit of the present invention. These embodiments and their modifications are included within the scope and spirit of the invention described in this specification, etc., and are also included in the invention described in the claims and their equivalents. [Explanation of symbols]

[0159] 10, 10B, 10C adjustment section 20, 20B Measuring section (Curing tank internal information acquisition section) 30 Control device (control unit) C. Concrete D curing tank G Ground (floor or ground surface inside a building) S, SB, SC Concrete Carbonation Curing System

Claims

1. a concave curing tank formed below the floor or ground surface in a vertical direction inside the building, in which concrete to be carbonation cured can be placed; An adjustment unit capable of adjusting the carbon dioxide concentration, temperature, and / or humidity inside the curing tank; the humidity is relative humidity or absolute humidity, a curing tank internal information acquisition unit capable of acquiring carbon dioxide concentration information indicating the carbon dioxide concentration inside the curing tank, and at least any of temperature information indicating the temperature and humidity information indicating the humidity, which information can be adjusted by the adjustment unit.

2. Further, a control unit controls the adjustment unit based on the information acquired by the curing tank internal information acquisition unit, the curing tank internal information acquisition unit includes at least one of a temperature measurement unit capable of measuring the temperature inside the curing tank and a humidity measurement unit capable of measuring the humidity inside the curing tank, and a carbon dioxide concentration measurement unit capable of measuring the carbon dioxide concentration inside the curing tank, The adjustment unit includes a temperature and humidity adjustment unit capable of adjusting the temperature and the humidity inside the curing tank, and a carbon dioxide supply unit capable of supplying carbon dioxide into the curing tank, 2. The concrete carbonation curing system according to claim 1, wherein the control unit comprises: a measurement result acquisition unit that acquires measurement results measured by the curing tank internal information acquisition unit; a temperature and humidity control unit that controls the temperature and humidity adjustment unit based on the measurement results; and a carbon dioxide supply control unit that controls the carbon dioxide supply unit based on the measurement results.

3. the curing tank internal information acquisition unit includes at least one of a temperature measurement unit capable of measuring the temperature inside the curing tank and a humidity measurement unit capable of measuring the humidity inside the curing tank, and a carbon dioxide concentration measurement unit capable of measuring the carbon dioxide concentration inside the curing tank, The adjustment unit is capable of supplying a gas containing carbon dioxide, in which at least one of the temperature and the humidity has been adjusted, into the curing tank, 3. The concrete carbonation curing system according to claim 2, wherein the control unit comprises: a measurement result acquisition unit that acquires the measurement results obtained by the curing tank internal information acquisition unit; a temperature and humidity control unit that controls adjustment of at least one of the temperature and the humidity of the carbon dioxide supplied to the adjustment unit based on the measurement results; and a carbon dioxide supply control unit that controls the supply of carbon dioxide by the adjustment unit based on the measurement results.

4. The control unit has a carbon dioxide supply determination unit that determines whether or not to start supplying carbon dioxide into the curing tank based on the measurement results acquired by the measurement result acquisition unit, 4. The concrete carbonation curing system according to claim 2, wherein the carbon dioxide supply control unit causes the adjustment unit to supply carbon dioxide when the carbon dioxide supply determination unit determines that the supply of carbon dioxide into the curing tank should be started.

5. the carbon dioxide concentration measuring unit has a first concentration meter arranged inside the curing tank at a position higher than the height of the concrete and lower than a floor surface inside the building or the ground surface, 5. The concrete carbonation curing system according to claim 4, wherein the carbon dioxide supply determination unit determines that the supply of carbon dioxide into the curing tank should be started when the measurement result of the carbon dioxide concentration by the first concentration meter becomes less than a first concentration.

6. 4. The concrete carbonation curing system according to claim 2, wherein the control unit comprises: an age information acquisition unit capable of acquiring age information of the concrete; and a quality determination unit configured to determine quality of the concrete based on, inside the curing tank, the temperature measured by the temperature measurement unit, the humidity measured by the humidity measurement unit, the carbon dioxide concentration measured by the carbon dioxide concentration measurement unit, and the age information of the concrete acquired by the age information acquisition unit.

7. 3. The concrete carbonation curing system according to claim 1, wherein the adjusting unit is disposed on a floor surface inside the building or on the ground surface.

8. A carbonation curing method using the concrete carbonation curing system according to claim 1, a placing step of placing the concrete in the curing tank; a curing tank internal information acquisition step of acquiring at least one of the carbon dioxide concentration information, the humidity information, and the temperature information inside the curing tank, which information is acquired by the curing tank internal information acquisition unit; a temperature and humidity determination step of determining whether the temperature information and the humidity information acquired by the curing tank internal information acquisition unit are within predetermined ranges; a temperature and humidity control step of controlling the operation of the adjustment unit based on the determination result in the temperature and humidity determination step; and a carbon dioxide supply determination step of determining whether or not to start supplying carbon dioxide into the inside of the curing tank based on the carbon dioxide concentration acquired by the curing tank internal information acquisition unit.

9. A program executed by the concrete carbonation curing system according to claim 1, a curing tank internal information acquisition function that acquires at least one of the carbon dioxide concentration information, the humidity information, and the temperature information inside the curing tank, which are acquired by the curing tank internal information acquisition unit; a temperature and humidity determination function that determines whether the temperature information and the humidity information acquired by the curing tank internal information acquisition unit are within a predetermined range; a temperature and humidity control function that controls the operation of the adjustment unit based on the determination result by the temperature and humidity determination function; a carbon dioxide supply determination function that determines whether or not to start supplying carbon dioxide into the inside of the curing tank based on the carbon dioxide concentration acquired by the curing tank internal information acquisition unit.

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