A water release rate measuring device

Abstract

The present application relates to the field of determination of concrete internal curing medium (concrete internal curing mechanism), and in particular to a water release rate determination device. It includes a box body, a pressure regulating device, a temperature control device, a first sample box and a sample weighing mechanism; wherein, a connection port is provided on the box body, and the pressure regulating device is connected to the connection port; the temperature control device is connected to the box body; the first sample box is arranged in the box body, and a thermometer is arranged therein; the sample weighing mechanism is arranged in the box body, and the sample weighing mechanism includes a weighing device, a water receiving assembly and a second sample box, the second sample box is placed on the weighing device through a bracket, and the water receiving assembly is located below the second sample box and is used to receive water discharged from the second sample box. The embodiment of the present application provides a water release rate determination device to solve the problem that the water absorption and release device in the related art cannot truly reflect the water release rate of the internal curing medium under the coupling of various environments.

Description

Technical Field

[0001] The present application relates to the field of determination of concrete internal curing medium (concrete internal curing mechanism), and in particular to a water release rate determination device. Background Art

[0002] Leakage in underground structures accelerates steel corrosion and concrete carbonization, resulting in up to 50% damage to structural durability, seriously threatening the safe service life and longevity of structures. Leakage in underground concrete structures in my country accounts for approximately 50% of total annual maintenance costs. The damage to concrete caused by various corrosive media is closely related to its inherent permeability. Therefore, improving the inherent waterproofing capacity of underground concrete structures is crucial for reducing leakage and improving their durability.

[0003] The functional characteristics of the internal curing medium in adsorbing water, storing water and retaining water can show a micro-regulatory effect on hydrostatic pressure. Studying the influence of the characteristics of the internal curing medium on the internal curing capacity index can improve the impermeability of concrete. However, the water release mechanism of the internal curing medium in cement mortar is difficult to measure directly. Moreover, there are relatively few water absorption and release rate devices in China. Generally, the water absorption and release rate is calculated by measuring the time of water absorption, tableting and drying. During the concrete hydration process, the internal curing medium is in a very complex environment of temperature, humidity and capillary negative pressure. Therefore, the current water absorption and release devices cannot truly reflect the water release mechanism of the internal curing medium under the coupling of various environments. In this case, it is very important to develop a device to measure the water release mechanism of the internal curing medium. Summary of the Invention

[0004] The embodiment of the present application provides a water release rate measuring device to solve the problem that the water absorption and release device in the related art cannot truly reflect the water release rate of the internal curing medium under the coupling of various environments.

[0005] In order to achieve the above objectives, the present application provides a water release rate measuring device, which comprises:

[0006] A box body, wherein the box body is provided with a connection port;

[0007] a pressure regulating device connected to the connecting port;

[0008] a temperature control device connected to the box body;

[0009] a first sample box, which is arranged in the box body, and a thermometer is provided in the first sample box;

[0010] A sample weighing mechanism is arranged in the box body, and the sample weighing mechanism includes a weighing device, a water receiving assembly and a second sample box. The second sample box is placed on the weighing device through a bracket. The water receiving assembly is located below the second sample box and is used to receive water discharged from the second sample box.

[0011] In some embodiments, the bracket includes a support rod and a base, the base is placed on the weighing device, and the support rod is fixed to the upper surface of the base and extends away from the base to receive the second sample box.

[0012] In some embodiments, the support further includes a placement platform, which is disposed on an end of the support rod away from the base and is used to place the second sample box.

[0013] In some embodiments, a water leakage hole is opened at the bottom of the second sample box, and filter paper is placed at the bottom of the second sample box.

[0014] In some embodiments, a mounting assembly is provided in the box body, and the water receiving assembly is provided on the mounting assembly and is located between the second sample box and the weighing device.

[0015] In some embodiments, the mounting assembly includes a suspension arm, which receives the water receiving assembly; the suspension arm is staggered with the bracket.

[0016] In some embodiments, the box body is provided with a receiving cavity for receiving a first sample box, the first sample box is a box body with a wire hole, the thermometer passes through the wire hole and is used to connect to the display;

[0017] A first sealing member is provided at the wire hole.

[0018] In some embodiments, the pressure regulating device includes a vent pipe connected to the connecting port, and a second sealing member is provided at the connection between the vent pipe and the connecting port.

[0019] In some embodiments, the box body includes a first box body and a second box body, the first box body and the second box body are connected by threads, and a support is provided at the connection, and a third sealing member is placed on the support.

[0020] In some embodiments, the weighing device includes a weighing device body and a housing, wherein the weighing device body is accommodated in the housing;

[0021] The weighing device further includes a weighing platform, and the weighing platform receives the second sample box.

[0022] The beneficial effects of the technical solution provided by this application include:

[0023] An embodiment of the present application provides a water release rate measuring device. Since a connection port is provided on the box body for connecting to a pressure regulating device, the pressure regulating device can regulate the pressure inside the box body; similarly, the box body is also connected to a temperature control device, which adjusts the temperature inside the box body, thereby making the internal curing medium placed in the box body have different temperatures, thereby realizing changes in the temperature and pressure environment in the box body.

[0024] The box body is also provided with a first sample box and a sample weighing mechanism. The first sample box is provided with a thermometer for monitoring the real-time temperature of the internal curing medium in the first sample box. The sample weighing mechanism includes a second sample box, a weighing device and a water receiving assembly. The second sample box is placed on the weighing device via a bracket. The water released from the internal curing medium in the second sample box is stored in the water receiving assembly. The weighing device measures the weight of the medium after the water is released, that is, the water release rate of the internal curing medium can be obtained.

[0025] It should be noted that dividing the curing medium into two sample boxes can avoid the measured temperature data being affected by the release of water from the internal curing medium, and avoid the released water sticking to the thermometer and affecting the accuracy of the water release rate; therefore, it can solve the problem in the related art that the water absorption and release device cannot truly reflect the water release rate of the internal curing medium under various environmental coupling effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is the overall structure diagram of the water release rate measuring device;

[0028] Figure 2 It is a structural diagram of the sample weighing mechanism;

[0029] Figure 3 It is a structural diagram of the weighing device;

[0030] Figure 4 Schematic diagram of the accommodating cavity in the box body.

[0031] In the figure: 1. First sample box; 11. Wire hole; 12. Thermometer; 2. Second sample box; 3. Box body; 31. First box body; 32. Second box body; 33. Connecting port; 34. Accommodating cavity; 4. Weighing device; 41. Outer shell; 42. Weighing device body; 43. Weighing platform; 44. Connecting port; 5. Bracket; 51. Base; 52. Support rod; 53. Placement platform; 6. Water receiving assembly; 7. Mounting assembly; 71. Mounting arm; 711. Support leg; 72. Bottom platform; 8. Ventilation pipe; 9. Support platform. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] The embodiment of the present application provides a water release rate measuring device, which can solve the problem that the water absorption and release device in the related art cannot truly reflect the water release rate of the internal curing medium under the coupling of various environments.

[0034] See also Figures 1 to 4 As shown, the present application provides a water release rate measuring device, comprising a box body 3, a first sample box 1, a sample weighing mechanism, a pressure regulating device, and a temperature control device. The box body 3 is provided with a connection port 33, through which the pressure regulating device communicates with the box body 3 for regulating the pressure inside the box body 3; the temperature control device is connected to the box body 3 for regulating the temperature inside the box body 3. Optionally, the temperature control device is located outside the box body 3 and can be specifically used with electromagnetic induction or water bath heating. According to Q = 0.24I 2 Optionally, the box body 3 is made of heat-conducting material, such as heat-conducting silica gel.

[0035] Furthermore, the first sample box 1 and the sample weighing mechanism are both arranged in the box body 3, and the first sample box 1 is provided with a thermometer 12: Specifically, in actual experiments, an internal curing medium is placed in the first sample box 1, and the temperature measuring end of the thermometer 12 is in contact with the internal curing medium to measure the temperature of the internal curing medium under the coupling effect of different environments;

[0036] The sample weighing mechanism includes a second sample box 2, a weighing device 4 and a water receiving assembly 6, wherein the second sample box 2 is placed on the weighing device 4 through a bracket 5, and the water receiving assembly 6 is located below the second sample box 2 for receiving water discharged from the second sample box 2.

[0037] An embodiment of the present application provides a water release rate measuring device. Since a connection port 33 is provided on the box body 3 for connecting to a pressure regulating device, the pressure regulating device can regulate the pressure inside the box body 3; similarly, the box body 3 is also connected to a temperature control device, which adjusts the temperature inside the box body 3, thereby placing the internal curing medium placed in the box body 3 in different temperature environments. The combination of the two realizes changes in the temperature and pressure environment in the box body 3.

[0038] The box body 3 is also provided with a first sample box 1 and a sample weighing mechanism. The first sample box 1 is provided with a thermometer 12 for monitoring the real-time temperature of the internal curing medium in the first sample box 1. The sample weighing mechanism includes a second sample box 2, a weighing device 4, and a water receiving assembly 6. The second sample box 2 is placed on the weighing device 4 via a bracket 5. The water released from the internal curing medium in the second sample box 2 is stored in the water receiving assembly 6. The weighing device 4 measures the weight of the medium after the water is released, that is, the water release rate of the internal curing medium can be obtained.

[0039] It should be noted that, since the internal curing medium is in a wet state during the actual curing process of concrete, the internal curing medium is divided into two sample boxes and placed therein. This can avoid the measured temperature data being affected by the release of water from the internal curing medium, and can also avoid the released water sticking to the thermometer and affecting the accuracy of the water release rate. Therefore, it can solve the problem in the related art that the water absorption and release device cannot truly reflect the water release rate of the internal curing medium under the coupling of various environments.

[0040] In some optional embodiments, see Figure 2 As shown, the bracket 5 includes a support rod 52 and a base 51, wherein the base 51 is placed on the weighing device 4, and the support rod 52 is fixed to the upper surface of the base 51 and extends away from the base 51 to receive the second sample box 2; specifically, there are multiple support rods 52;

[0041] Combine Figure 2 As shown, in this embodiment, the base 51 and the second sample box 2 are both square, and there are four support rods 52 , which are respectively arranged at the four corners of the square base 51 to support the second sample box 2 .

[0042] Alternatively, see Figure 2 As shown, the support 5 further includes a placement platform 53 , which is provided on one end of the support rod 52 away from the base 51 and is used for placing the second sample box 2 .

[0043] In some optional embodiments, a water leakage hole is opened at the bottom of the second sample box 2, and filter paper is placed at the bottom of the second sample box 2, and an internal curing medium is placed on the filter paper. Water released by the internal curing medium under the coupling of the environment drips into the water receiving component 6 through the filter paper and the water leakage hole at the bottom of the second sample box 2.

[0044] In some optional embodiments, see Figure 1 and Figure 2 As shown, a mounting assembly 7 is provided in the box body 3, and a water receiving assembly 6 is provided on the mounting assembly 7 and is located between the second sample box 2 and the weighing device 4;

[0045] Specifically, the mounting arm 71 receives the water receiving assembly 6;

[0046] For the installation component 7, the following embodiments are provided:

[0047] Example 1:

[0048] Combine Figure 2 As shown, the mounting assembly 7 includes a mounting arm 71 having an inverted U-shaped structure and a support leg 711 fixed to the bottom of the box body 3. Optionally, there are two mounting arms 71, which are staggered. The water receiving assembly 6 includes a water receiving box, which is placed at the intersection of the two mounting arms 71. It should be noted that the mounting arm 71 is offset from the bracket 5. Of course, to ensure the stable placement of the water receiving box, there can be multiple mounting arms 71, or a locking mechanism can be provided at the connection between the water receiving box and the mounting arm 71.

[0049] Alternatively, the leg 711 of the mounting arm 71 may also be mounted and fixed on the top of the box body 3 .

[0050] Example 2:

[0051] The mounting assembly 7 includes a mounting arm 71 in the shape of a long rod, with both ends connected to the inner wall of the box body 3. Optionally, there are two mounting arms 71, which are arranged crosswise. The water receiving assembly 6 includes a water receiving box, which is placed at the intersection of the two mounting arms 71. It should be noted that the mounting arms 71 are arranged offset from the bracket 5.

[0052] In some embodiments, the water receiving assembly 6 includes a funnel, a water receiving pipe and a water receiving tray, wherein the funnel is connected to the bottom of the second sample box 2 for collecting water released from the internal curing medium therein, and the bottom of the funnel is connected to a water receiving pipe, which drains the water into the water receiving tray; this allows the water to be discharged, but the presence of the funnel may affect the weight of the first sample box 1, so the placement method of the water receiving assembly 6 preferably adopts the above-mentioned installation assembly 7.

[0053] In some preferred embodiments, see Figure 1 and Figure 2As shown, the mounting assembly 7 and the bracket 5 are arranged alternately, wherein the bracket 5 together with the second sample box 2 are placed on the weighing device 4, and the water receiving assembly 6 is placed under the second sample box 2 through the mounting assembly 7; preferably, the mounting assembly 7 also includes a base 72, the base 72 is placed on the bottom surface of the box body 3, and the legs 711 of the mounting arm 71 are fixed on the base 72, optionally, the legs 711 and the base 72 are fixed using a mortise and tenon structure; in this embodiment, the center of the base 72 is hollowed out and used to place the weighing device 4.

[0054] In some optional embodiments, see Figure 1 and Figure 4 As shown, the box body 3 is provided with a receiving cavity 34 for receiving the first sample box 1. The first sample box 1 is a box body with a wire hole 11. The thermometer 12 passes through the wire hole 11 and is used to connect with the display.

[0055] Specifically, the accommodating cavity 34 and the box body 3 are an integrally formed structure, which can ensure the sealing of the box body 3; preferably, the box body 3 and the first sample box 1 are both made of materials with good thermal conductivity, such as thermal conductive silicone.

[0056] Optionally, the height of the first sample box 1 is lower than that of the accommodating chamber 34 . After the first sample box 1 is placed in the accommodating chamber 34 , a cover may be added on the first sample box 1 to prevent the temperature in the first sample box 1 from escaping.

[0057] Furthermore, the thermometer 12 can be a thermometer with a digital display, so that there is no need to open a hole in the first sample box 1, so that the data line on the thermometer 12 can be as shown in FIG. Figure 1 The thermometer 12 passes through the first sample box 1 and is connected to an external display. However, during the heating process, fog may form inside the box body 3. Therefore, in this embodiment, a wire hole 11 is provided to transmit the temperature signal of the thermometer 12 to the display outside the box body 3 via a data cable. Specifically, a first sealing member is provided at the wire hole 11. Preferably, the first sealing member uses an anti-overflow pad, and the anti-overflow pad is located on both the inner and outer sides of the first sample box 1.

[0058] In some optional embodiments, see Figure 1 As shown, the negative pressure regulating device includes a vent pipe 8, which is connected to the connecting port 33, and a second sealing member is provided at the connection between the vent pipe 8 and the connecting port 33. Specifically, the second sealing member can use an airtight gelling material with better ductility.

[0059] In some optional embodiments, see Figure 1As shown, the box body 3 is a detachable connection structure. Optionally, in this embodiment, the box body 3 includes a first box body 31 and a second box body 32, and the first box body 31 and the second box body 32 are connected by threads. A support 9 is provided at the connection between the two, and a third sealing member is placed on the support 9. Optionally, the third sealing member uses a sealing ring, and the diameter of the sealing ring is consistent with the diameter of the support 9 to ensure the sealing of the connection between the first box body 31 and the second box body 32.

[0060] Combine Figure 1 As shown, the first box body 31 and the second box body 32 are both cylindrical, and the sample weighing mechanism is placed at the bottom of the box body 3. The first sample box 1 is located in the first box body 31. When the temperature control device heats the entire box body 3 for a certain period of time, the temperature in the entire box body 3 is uniform, and the placement of the sample box will not affect the measurement results.

[0061] Of course, the first sample box 1 and the sample weighing mechanism can also be placed at the bottom of the box body 3 .

[0062] Alternatively, the box body 3 includes a box cover and a box body, and the box cover and the box body are detachably connected to facilitate the opening and closing of the box body 3; preferably, a third sealing member is also provided at the connection between the two to enhance the sealing effect.

[0063] In some optional embodiments, see Figure 1 and Figure 3 As shown, the weighing device 4 includes a weighing device body 42 and a housing 41. The weighing device body 42 is accommodated in the housing 41. The housing 41 can reduce the impact of temperature and air pressure changes on the weighing device body 42 and extend its service life.

[0064] Furthermore, the weighing device 4 further includes a weighing platform 43 , which receives the second sample box 2 , thereby increasing the placement area and making the upper second sample box 2 more stably placed.

[0065] Further, combined with Figure 3 As shown, the weighing device 4 further includes a connection port 44 , which is used to connect to an external power source to display the weight of the curing medium in the second sample box 2 .

[0066] This application is based on the use of a weight sensor to measure the weight change of the sample under the coupling of different temperatures and capillary negative pressure factors to obtain direct data, thereby evaluating the water release rate of the internal curing medium, and obtaining the temperature inside the box body 3 through the thermometer 12, and the air pressure inside the box body 3 through the pressure regulating device to obtain the final result.

[0067] Among them, when the test pieces are consistent, the temperature is consistent, and the pressure is different, the faster and larger the data of the weighing device 4 changes, the faster the water release rate of the internal curing medium.

[0068] When the test pieces are consistent, the temperatures are different, and the pressures are consistent, the faster and larger the data of the weighing device 4 changes, the faster the water release rate of the internal curing medium.

[0069] Moreover, the embodiment of the present application provides a water release rate measuring device with a simple structure and equipment, easy assembly, and convenient operation. The temperature inside the box can be adjusted by the temperature control system, and the air pressure inside the box can be adjusted by the pressure regulating device. The embodiment of the present application simulates different humidity and capillary negative pressure environments inside the concrete, and uses the most basic method to obtain the water release rate of the internal curing medium, simulating the water release mechanism of the internal curing medium under actual environmental conditions, and serves as a reference for studying the influence of the characteristics of the internal curing medium on the improvement of the internal curing capacity indicators and the ability to improve the impermeability of concrete.

[0070] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0071] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0072] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A water release rate measuring device, characterized in that: It includes: A box body (3), wherein a connection port (33) is provided on the box body (3); a pressure regulating device connected to the connecting port (33); a temperature control device connected to the box body (3); A first sample box (1) is arranged in the box body (3), wherein a thermometer (12) is provided in the first sample box (1), and the thermometer (12) is used to monitor the real-time temperature of the curing medium in the first sample box (1); A sample weighing mechanism is provided in the box body (3), comprising a weighing device (4), a water receiving assembly (6), and a second sample box (2), wherein the second sample box (2) is placed on the weighing device (4) via a bracket (5), and the water receiving assembly (6) is located below the second sample box (2) and is used to receive water discharged from the second sample box (2); The support (5) includes a support rod (52) and a base (51), wherein the base (51) is placed on the weighing device (4), and the support rod (52) is fixed to the upper surface of the base (51) and extends away from the base (51) to receive the second sample box (2); A mounting assembly (7) is provided in the box body (3), and the water receiving assembly (6) is provided on the mounting assembly (7) and is located between the second sample box (2) and the weighing device (4).

2. The water release rate measuring device according to claim 1, wherein: The support (5) further comprises a placement platform (53), which is arranged on one end of the support rod (52) away from the base (51) and is used for placing the second sample box (2).

3. The water release rate measuring device according to claim 1, wherein: A water leakage hole is provided at the bottom of the second sample box (2), and filter paper is placed at the bottom of the second sample box (2).

4. The water release rate measuring device according to claim 1, wherein: The mounting assembly (7) comprises a suspension arm (71), and the suspension arm (71) receives the water receiving assembly (6); the suspension arm (71) and the bracket (5) are arranged in a staggered manner.

5. The water release rate measuring device according to claim 1, wherein: The box body (3) is provided with a receiving cavity (34) for receiving a first sample box (1), wherein the first sample box (1) is a box body provided with a wire hole (11), and the thermometer (12) passes through the wire hole (11) and is used to be connected to a display; A first sealing member is provided at the wire hole (11).

6. The water release rate measuring device according to claim 1, wherein: The pressure regulating device comprises a vent pipe (8), the vent pipe (8) is connected to the connecting port (33), and a second sealing member is provided at the connection between the vent pipe (8) and the connecting port (33).

7. The water release rate measuring device according to claim 1, wherein: The box body (3) comprises a first box body (31) and a second box body (32). The first box body (31) and the second box body (32) are connected by threads, and a support platform (9) is provided at the connection point. A third sealing member is placed on the support platform (9).

8. The water release rate measuring device according to claim 1, wherein: The weighing device (4) comprises a weighing device body (42) and a housing (41), wherein the weighing device body (42) is accommodated in the housing (41); The weighing device (4) further comprises a weighing platform (43), and the weighing platform (43) receives the second sample box (2).

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