Concrete curing system based on reversible moisture absorption bending of pine cone scales

Abstract

The invention discloses a concrete curing system based on reversible moisture absorption bending of pine cone flakes. The concrete curing system comprises a monitoring mechanism and a circular ring water spraying mechanism. The monitoring mechanism comprises pine cone scales, a rectangular supporting and fixing table, a displacement monitoring device, a weighing device and a microcomputer. The pine cone scales serve as the core of the mechanism, the height change and the water content change of the mechanism are monitored through the displacement monitoring device and the weighing device, the displacement monitoring device and the weighing device transmit signals to the microcomputer for calculation, and the microcomputer controls the circular ring water spraying mechanism to spray water for maintenance. The circular ring water spraying mechanism comprises a first water spraying device and a second water spraying device which are matched with the monitoring mechanism, and the water spraying amount can be accurately controlled. On the basis of reversible moisture absorption bending of pine cone scales, automatic maintenance of the concrete test blocks is achieved, one monitoring mechanism can be used for conducting water spraying maintenance on the multiple concrete test blocks at the same time through connection of the water conveying pipes, the cost is greatly reduced, and the water consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of concrete water spraying curing, and in particular to a concrete curing system based on the reversible moisture absorption and bending of pine cone scales. Background Art

[0002] In the modern construction industry, concrete pouring is often used to build houses, roads and other buildings, and the hardening effect of concrete directly affects the strength of the building. During the hardening process of concrete, its moisture content will continue to decrease, and insufficient moisture will affect the final hardening quality. In order to ensure that the concrete strength meets the requirements, the concrete needs to be regularly sprayed with water to ensure that it has sufficient moisture.

[0003] At present, concrete curing mainly relies on manual water spraying, which cannot control the amount of water sprayed on the surface, cannot ensure that the concrete surface is always fully hydrated, and has low water spraying efficiency. In addition, due to the difference in evaporation of surface moisture of concrete specimens in different dry and wet environments, especially the change of weather, it is necessary to manually determine the interval of water spraying curing, which wastes a lot of manpower and time costs. In order to solve the above problems, the present invention proposes a concrete water spraying curing system based on the reversible hygroscopic bending of pine cone scales. Summary of the invention

[0004] In response to the above-mentioned problems, the purpose of the present invention is to provide a concrete curing system based on the reversible hygroscopic bending of pine cone scales, which utilizes the speed of change of the reversible hygroscopic bending of pine cone scales in different environments to automatically identify dry and wet environments and adjust the curing interval time, control the water spraying amount, and complete automatic water spraying curing, thereby solving the technical problems raised in the background technology, such as low efficiency of manual water spraying, difficulty in ensuring appropriate water spraying amount, and determination of curing interval time according to differences in water evaporation in the environment.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme, and provides a concrete curing system based on the reversible hygroscopic bending of pine cone scales, including a monitoring mechanism and a circular water spraying mechanism, the monitoring mechanism includes pine cone scales, a rectangular support fixing platform, a displacement monitoring device, a weighing device and a microcomputer; the circular water spraying mechanism includes a first water spraying device and a second water spraying device, and pine cone scales and concrete test blocks are placed at the center of the ring respectively.

[0006] Furthermore, the rectangular support fixing platform serves as the main body of the entire system, including an upper mounting block, a middle support block and a bottom load-bearing block. The middle support block is divided into an A-pillar and a B-pillar. The weight of the bottom load-bearing block is much greater than that of the remaining structures.

[0007] Furthermore, the upper mounting block is installed with a displacement monitoring device, which includes a horizontal aluminum sheet and an eddy current displacement sensor. The horizontal aluminum sheet is bonded to the top of the pine cone scale and its position matches that of the eddy current displacement sensor. The probe end of the eddy current displacement sensor extends from the center of the fixed plate and is aligned with the horizontal aluminum sheet. Limiting holes are opened on both sides of the center of the fixed plate. The limiting holes are sleeved with adjusting screws to form a fixation. The upper side of the adjusting screw passes through the threaded hole. The threaded hole is located on the upper mounting block. The adjusting screw is located in the adjusting spring. One end of the adjusting spring is connected to the fixed plate, and the other end is connected to the upper mounting block.

[0008] Furthermore, a water pipe is provided inside the A-pillar, a wireless control valve is arranged on the outside, and a first water spray device is supported on the inside. The first water spray device is connected to the water pipe through a threaded pipe. The water pipe is connected to the wireless control valve at the water inlet, and the water outlet is connected to a water steel ring. The water steel ring is fixed to the threaded pipe as a whole by a support frame. A plurality of limiting screw holes are arranged in the ring, and the limiting screw holes fix the atomizing nozzle; the second water spray device has the same structure as the first water spray device; a microcomputer is provided on the outside of the B-pillar, and the microcomputer is used to receive data from the displacement monitoring device and the weighing device and perform calculations and processing, and at the same time control the opening and closing of the wireless control valve.

[0009] Furthermore, a weighing device is arranged at the center of the bottom load-bearing block, and the main body of the weighing device is a truncated cone support platform. A small weighing sensor is provided on the upper end of the truncated cone support platform, and an isolation plate is provided on the upper surface of the small weighing sensor. The isolation plate is connected to the support rod, and a limit clamp is provided on the top of the support rod, which fixes the bottom end of the pine cone scale.

[0010] Furthermore, the entire outer surface of the weighing device is made of hydrophobic material, and the upper surface area is equivalent to the bottom area of ​​the isolation plate and the support rod, which is convenient for water drops to roll off.

[0011] Furthermore, the pine cone scales, with the bending axis as the center, include adaxial epidermis, thick wall tissue, sclerenchyma layer and distal epidermis from near to far; the bottom end of the pine cone scales is fixed on the weighing device, and the whole is located at the center of the first water spray device, with the top end aligned with the displacement monitoring device.

[0012] Furthermore, the displacement monitoring device monitors the vertical displacement change h of the top of the pine cone scale, and can calculate the opening angle θ of the pine cone scale. The calculation formula is as follows:

[0013]

[0014] Wherein, h is the height change of the horizontal aluminum sheet, (mm); l is the length of the pine cone scale, (mm).

[0015] The weighing device monitors the change in water content per unit area of ​​pine cone scales, and the calculation formula is as follows:

[0016]

[0017] In the formula, Q Ab is the change in water content per unit area of ​​pine cone scales, (g / cm 3 );M W and M D are the weight of pine cone scales after water spraying and the dry weight before water spraying, respectively. The change in water content is M = M W -M S , (g); S1 is the adaxial epidermal area, (cm 3 ); S2 is the abaxial epidermal area, (cm 3 ), the lateral area of ​​the pine cone scales is negligible.

[0018] Furthermore, the pine cone scales take the plane in the dry state as the reference plane, and the water content is directly proportional to the opening angle, that is, M∝θ.

[0019] Furthermore, the reversible hygroscopic bending of the pine cone scales is mainly due to the different angles between the cellulose in the thick wall tissue cells and the sclerenchyma layer cells and the long axis of the two cells. When absorbing water, the length change of the thick wall tissue cells ΔL1 < the length change of the sclerenchyma layer cells ΔL2, generating growth stress, and the sclerenchyma layer compresses the thick wall tissue, causing the pine cone scales to bend upward as a whole. When losing water, the gap between the abaxial epidermal cells > the gap between the adaxial epidermal cells, and the sclerenchyma layer cells are the first to restore their original length, driving the scales to return to their original state as a whole, forming a reversible bending movement.

[0020] Furthermore, the water content per unit area of ​​the pine cone scales corresponds to the water requirement per unit area for spraying water during the curing of the concrete test block.

[0021] The beneficial effects of the present invention are:

[0022] (1) The present invention monitors the bending and weight changes of pine cone scales when absorbing water, and uses the changes in the water content of the pine cone scales to correspond to the water demand for concrete curing, thereby controlling the curing water spraying volume. At the same time, in conjunction with an atomizing nozzle, the moisture content of each surface of the concrete is kept sufficient and uniform at all times, thereby achieving the effect of accurately controlling the water spraying volume and saving water resources.

[0023] (2) The present invention uses the difference in the speed of water loss of pine cone scales under different dry and wet conditions to indirectly judge the dry and wet conditions of the environment, derive the difference in water evaporation, and through the cooperation of eddy current displacement sensors and small weight sensors, with pine cone scales as the core, automatically adjust the maintenance interval time, thereby reducing the need for manual judgment on whether to spray water based on the dry and wet conditions of the concrete surface.

[0024] (3) Based on the reversible moisture absorption and bending characteristics of pine cone scales, the present invention repeats the water absorption and water loss process to continuously maintain concrete without manual operation. In addition, the pine cone scales are used as the core of the entire maintenance system automation, which greatly reduces the maintenance and repair costs of the system.

[0025] (4) The present invention can use a monitoring mechanism to simultaneously spray water on multiple concrete test blocks through the connection of a water pipe, thereby greatly reducing system costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a concrete curing system based on the reversible hygroscopic bending of pine cone scales of the present invention;

[0027] Figure 2 It is a three-dimensional structural schematic diagram of the monitoring mechanism of the present invention;

[0028] Figure 3 It is a three-dimensional structural cross-sectional view of the monitoring mechanism of the present invention;

[0029] Figure 4 for Figure 3 Schematic diagram of the disassembly of the structural displacement monitoring device at A in the middle;

[0030] Figure 5 for Figure 3 Schematic diagram of the disassembly of the structural weighing device at B in the middle;

[0031] Figure 6 It is a three-dimensional structural schematic diagram of the circular ring water spraying mechanism of structure 2 of the present invention;

[0032] Figure 7 for Figure 6 A schematic diagram of the disassembly of the first water spray device of structure 21;

[0033] Figure 8 This is a schematic diagram of the moisture absorption and bending principle of the pine cone scales of the present invention;

[0034] Fig. 9 This is a model diagram of water absorption and water loss of pine cone scales of the present invention.

[0035] Explanation of the figure markings: 1- monitoring mechanism; 2- circular water spraying mechanism; 21- first water spraying device; 22- second water spraying device; 23- water pipe; 24- wireless control valve; 211- threaded pipe; 212- water supply steel ring; 213- support frame; 214- limiting screw hole; 215- atomizing nozzle; 3- pine cone scale; 31- adaxial epidermis; 32- thick wall tissue; 33- scleral layer; 34- abaxial epidermis; 35- cellulose; 4- rectangular support fixing platform; 41- upper mounting block ;42-middle support block;43-bottom load-bearing block;421-A column;422-B column;5-displacement monitoring device;51-horizontal aluminum sheet;52-eddy current displacement sensor;53-fixing plate;54-limiting hole;55-adjusting screw;56-threaded hole;57-adjusting spring;6-weighing device;61-truncated cone support table;62-small weighing sensor;63-isolating plate;64-support rod;65-limiting clamp;7-microcomputer;8-concrete test block. Specific implementation methods

[0037] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The concrete curing system based on the reversible hygroscopic bending of pine cone scales involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0038] Embodiment 1: As attached Figure 1-Figure 9 As shown, a concrete curing system based on the reversible hygroscopic bending of pine cone scales includes a monitoring mechanism 1 and a circular water spraying mechanism 2. The monitoring mechanism 1 includes pine cone scales 3, a rectangular support fixing platform 4, a displacement monitoring device 5, a weighing device 6 and a microcomputer 7; the circular water spraying mechanism 2 includes a first water spraying device 21 and a second water spraying device 22, and pine cone scales 3 and concrete test blocks 8 are placed at the center of the ring respectively. The system controls the concrete curing process based on the reversible hygroscopic bending characteristics of pine cones, takes pine cone scales as the core of the monitoring mechanism, monitors the height change value of the end and the change of water content per unit area through the displacement monitoring device and the weighing device, processes the results obtained by the microcomputer, adopts the method of expressing the water volume by the height change value, corresponding to the water demand per unit area of ​​concrete, and finally controls the circular water spraying mechanism to perform water spraying curing.

[0039] The rectangular support fixing platform 4 is the main body of the whole system, including an upper mounting block 41, a middle support block 42 and a bottom load-bearing block 43. The middle support block 42 is divided into an A column 421 and a B column 422. The weight of the bottom load-bearing block 43 is much greater than the other structures. The rectangular support fixing platform is divided into blocks to play a role. The upper part monitors the height change value of the pine cone scales, the middle part controls the water flow and installs a microcomputer, and the bottom is increased in weight to serve as a load-bearing block.

[0040] The upper mounting block 41 is provided with a displacement monitoring device 5, which includes a horizontal aluminum sheet 51 and an eddy current displacement sensor 52. The horizontal aluminum sheet 51 is bonded to the top of the pine cone scale 3, and its position matches that of the eddy current displacement sensor 52. The probe end of the eddy current displacement sensor 52 extends from the center of the fixing plate 53 and is aligned with the horizontal aluminum sheet 51. The fixing plate 53 has limit holes 54 on both sides of the center. The limit holes 54 are sleeved with the adjusting screw 55 to form a fixed position. The upper side of the adjusting screw 55 passes through the threaded hole 56, and the threaded hole 56 is located on the upper mounting block 41. The adjusting screw 55 is located in the adjusting spring 57. One end of the adjusting spring 54 is connected to the fixing plate 53, and the other end is connected to the upper mounting block 41. The adjusting screw is rotated to extend and retract the adjusting spring, which drives the fixing plate to move, thereby driving the probe end of the eddy current displacement sensor fixed on the fixing plate, adjusting the distance between the probe end of the eddy current displacement sensor and the horizontal aluminum sheet, and using the method of the eddy current displacement sensor to identify the height change of the horizontal aluminum sheet to monitor the height change value of the pine cone scale.

[0041] The A-pillar 421 is provided with a water pipe 23 inside, a wireless control valve 24 is arranged outside, and the first water spray device 21 is supported inside. The first water spray device 21 is sleeved on the water pipe 23 through a threaded pipe 211. The water pipe 23 is connected to the wireless control valve 24 at the water inlet, and the water outlet is connected to the water steel ring 212. The water steel ring 212 is fixed to the threaded pipe 211 as a whole by a support frame 213. A plurality of limiting screw holes 214 are arranged inside the ring, and the limiting screw holes 214 fix the atomizing nozzle 215; the second water spray device 22 has the same structure as the first water spray device 21; the B-pillar 422 is provided with a microcomputer 7 outside, and the microcomputer 7 is used to receive the data of the displacement monitoring device 5 and the weighing device 6 and perform calculation processing, and at the same time control the opening and closing of the wireless control valve 24. Using atomization as a water spraying method can not only make the concrete surface fully receive water, but also reduce the error of receiving different water caused by the difference in surface area between concrete and pine cone scales.

[0042] The weighing device 6 is arranged at the center of the bottom load-bearing block 43. The main body of the weighing device 6 is a truncated cone support platform 61. A small weighing sensor 62 is arranged at the upper end of the truncated cone support platform 61. An isolation plate 63 is arranged on the upper surface of the small weighing sensor 62. The isolation plate 63 is connected to a support rod 64. A limit clamp 65 is arranged at the top of the support rod 64. The limit clamp 65 fixes the bottom end of the pine cone scale 3. The overall outer surface material of the weighing device 6 is a hydrophobic material, and the upper surface area is equivalent to the bottom area of ​​the isolation plate 63 and the support rod 64, which is convenient for water droplets to roll off. The support platform adopts a truncated cone structure, which not only increases the bottom weight, but also facilitates the water droplets to slide off. Its upper surface area is equivalent to the bottom area of ​​the isolation plate and the support rod, which prevents water accumulation. At the same time, a support rod is arranged to lift the pine cone scales so that the pine cone scales are completely in contact with the mist, reducing the influence of the truncated cone structure of the support platform.

[0043] The pine cone scale 3 includes an adaxial epidermis 31, a thick wall tissue 32, a scleral layer 33 and a distal epidermis 34 from near to far with the bending axis as the center; the bottom end of the pine cone scale 3 is fixed on the weighing device 6, and the whole is located at the center of the first water spray device 21, and the top end is aligned with the displacement monitoring device 5.

[0044] The displacement monitoring device 5 monitors the vertical displacement change h of the top of the pine cone scale 3, and the microcomputer 7 can calculate the opening angle θ of the pine cone scale 3, and the calculation formula is as follows:

[0045]

[0046] Wherein, h is the height change value of the horizontal aluminum sheet 51, (mm); l is the length of the pine cone scale 3, (mm).

[0047] The weighing device 6 monitors the change in water content per unit area of ​​the pine cone scales 3, and the calculation formula is as follows:

[0048]

[0049] In the formula, Q Ab is the change in water content per unit area of ​​pine cone scale 3, (g / cm 3 );M W and M D are the weight of pine cone scale 3 after water spraying and before water spraying, respectively, and the water content change M=M W -M D , (g); S1 is the area of ​​the adaxial epidermis 31, (cm 3 ); S2 is the abaxial epidermis 34 area, (cm 3 ), the lateral area of ​​pine cone scale 3 is negligible.

[0050] The pine cone scale 3 takes the plane in the dry state as the reference plane, and its water content is directly proportional to the opening angle, that is, M∝θ.

[0051] The reversible moisture absorption and bending of the pine cone scale 3 is mainly due to the different angles between the cellulose 35 in the cells of the sclerenchyma 32 and the cells of the sclerenchyma layer 33 and the long axis of the two cells. When absorbing water, the length change of the sclerenchyma 32 cells ΔL1 < the length change of the sclerenchyma layer 33 cells ΔL2, generating growth stress, and the sclerenchyma layer 33 compresses the sclerenchyma 32, causing the pine cone scale 3 to bend upward as a whole. When losing water, the intercellular space of the abaxial epidermis 34 > the intercellular space of the adaxial epidermis 31, and the cells of the sclerenchyma layer 33 are the first to restore their original length, driving the scale to restore its original state as a whole, forming a reversible bending movement.

[0052] The water content per unit area of ​​the pine cone scale 3 corresponds to the water demand per unit area of ​​the concrete test block 8 for curing water spraying. By monitoring the opening and closing changes of the pine cone scale 3, the dry and wet conditions of the environment are indirectly judged to ensure that the concrete test block meets the curing requirements under different dry and wet conditions and accurately controls the water spraying amount. Therefore, the first water spraying device and the second water spraying device adopt the same structure to ensure that the water absorbed per unit area of ​​the pine cone scale 3 is equivalent to the water absorbed per unit area of ​​the concrete test block 8. By monitoring the changes in the water absorption process of the pine cone scale 3, it is indirectly judged whether the water absorbed per unit area of ​​the concrete test block 8 reaches the water demand requirement for curing, and the water spraying is monitored and controlled by the microcomputer 7, so that the water content per unit area of ​​the pine cone scale 3 can reach the water demand per unit area of ​​the concrete test block 8. At the same time, since the second water spraying device 22 is connected to the monitoring mechanism through a water pipe, multiple groups of second water spraying devices can be set, and the water demand requirements for curing of multiple concrete test blocks can be met by one monitoring mechanism at the same time, which greatly reduces the cost.

[0053] The specific embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A concrete curing system based on the reversible hygroscopic bending of pine cone scales, characterized in that: The invention comprises a monitoring mechanism (1) and a circular water spraying mechanism (2), wherein the monitoring mechanism (1) comprises pine cone scales (3), a rectangular support fixing platform (4), a displacement monitoring device (5), a weighing device (6) and a microcomputer (7); the circular water spraying mechanism (2) comprises a first water spraying device (21) and a second water spraying device (22), and the pine cone scales (3) and a concrete test block (8) are respectively placed at the center of the ring.

2. A concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 1, characterized in that: The rectangular support fixing platform (4) serves as the main body of the entire system, comprising an upper mounting block (41), a middle support block (42) and a bottom load-bearing block (43); the middle support block (42) is divided into an A-pillar (421) and a B-pillar (422).

3. A concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 2, characterized in that: The upper mounting block (41) is provided with a displacement monitoring device (5), the displacement monitoring device (5) comprising a horizontal aluminum sheet (51) and an eddy current displacement sensor (52), the horizontal aluminum sheet (51) being bonded to the top of the pine cone scale (3) and being positioned to match the eddy current displacement sensor (52), the probe end of the eddy current displacement sensor (52) extending from the center of the fixing plate (53) and aligned with the horizontal aluminum sheet (51), the fixing plate (53) having limiting holes (54) on both sides of the center, the limiting holes (54) being sleeved with an adjusting screw (55) to form a fixation, the upper side of the adjusting screw (55) passing through a threaded hole (56), the threaded hole (56) being located on the upper mounting block (41), the adjusting screw (55) being located in an adjusting spring (57), one end of the adjusting spring (54) being connected to the fixing plate (53) and the other end being connected to the upper mounting block (41).

4. A concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 2, characterized in that: The A-pillar (421) is provided with a water pipe (23) inside, a wireless control valve (24) is arranged outside, and a first water spray device (21) is supported inside. The first water spray device (21) is sleeved on the water pipe (23) through a threaded tube (211). The water inlet of the water pipe (23) is connected to the wireless control valve (24), and the water outlet is connected to a water supply steel ring (212). The water supply steel ring (212) is fixed to the threaded tube (211) as a whole by a support frame (213). A plurality of limiting screw holes (214) are arranged inside the ring, and the limiting screw holes (214) fix the atomizing nozzle (215). The second water spray device (22) has the same structure as the first water spray device (21). The B-pillar (422) is provided with a microcomputer (7) outside. The microcomputer (7) is used to receive data from a displacement monitoring device (5) and a weighing device (6) and perform calculation processing, and at the same time control the opening and closing of the wireless control valve (24).

5. A concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 2, characterized in that: A weighing device (6) is arranged at the center of the bottom load-bearing block (43); the main body of the weighing device (6) is a truncated cone support platform (61); a small weighing sensor (62) is arranged at the upper end of the truncated cone support platform (61); an isolation plate (63) is arranged on the upper surface of the small weighing sensor (62); the isolation plate (63) is connected to a support rod (64); a limit clamp (65) is arranged at the top end of the support rod (64); and the limit clamp (65) fixes the bottom end of the pine cone scale (3).

6. A concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 1, characterized in that: The entire outer surface of the weighing device (6) is made of a hydrophobic material, and the upper surface area is equivalent to the bottom area of ​​the isolation plate (63) and the support rod (64), so that water drops can roll off easily.

7. The concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 1 is characterized in that: The pine cone scale (3) includes, from near to far, a proximal epidermis (31), a thick wall tissue (32), a scleral layer (33) and a distal epidermis (34) with the bending axis as the center; the bottom end of the pine cone scale (3) is fixed on the weighing device (6), the whole is located at the center of the first water spray device (21), and the top end is aligned with the displacement monitoring device (5).

8. The concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 1 is characterized in that: The displacement monitoring device (5) monitors the vertical displacement change h of the top of the pine cone scale (3), and calculates the opening angle θ of the pine cone scale (3) through the microcomputer (7), and the calculation formula is as follows: Wherein, h is the height change value of the horizontal aluminum sheet (51), in mm; l is the length of the pine cone scale (3), in mm; The weighing device (6) monitors the change in water content per unit area of ​​the pine cone scales (3), and the calculation formula is as follows: In the formula, Q Ab is the change in water content per unit area of ​​pine cone scales (3), in g / cm 3 ; M W and M D are the weight of the pine cone scale (3) after spraying water and before spraying water, respectively, and the change in water content M = M W -M D , in g; S1 is the area of ​​the adaxial epidermis (31), in cm 3 ; S2 is the area of ​​the abaxial epidermis (34), in cm 3 , the lateral area of ​​pine cone scales (3) is negligible.

9. A concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 8, characterized in that: The pine cone scale (3) takes the plane in the dry state as the reference plane, and its water content is directly proportional to the opening angle, that is, M∝θ; the water content per unit area of ​​the pine cone scale (3) corresponds to the water requirement per unit area of ​​the concrete test block (8) for curing water spraying.

10. A concrete curing system based on the reversible hygroscopic bending of pine cone scales according to claim 8, characterized in that: The reversible hygroscopic bending of the pine cone scale (3) is mainly caused by the different angles between the cellulose (35) in the cells of the sclerenchyma (32) and the long axis of the cells of the sclerenchyma layer (33); when absorbing water, the length change of the sclerenchyma (32) cells ΔL1 is less than the length change of the sclerenchyma layer (33) cells ΔL2, which generates growth stress, and the sclerenchyma layer (33) compresses the sclerenchyma (32), causing the pine cone scale (3) to bend upward as a whole; when losing water, the intercellular space of the distal epidermis (34) is greater than the intercellular space of the proximal epidermis (31), and the cells of the sclerenchyma layer (33) are the first to restore their original length, driving the scale as a whole to restore to its original state, forming a reversible bending movement.

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