High-water-pressure detachable self-repairing concrete testing device and manufacturing method

Abstract

The invention relates to a high-water-pressure detachable self-repairing concrete testing device and a manufacturing method, and belongs to the technical field of waterproof material construction. Comprising a separated concrete box body, a fixing device, a sealing device and a water delivery and drainage device. The whole separated concrete box body is made of common commercial concrete, the surfaces of waterproof weak parts such as a post-cast strip, a construction joint and a through-wall pipe of the box body are coated with a self-repairing waterproof material, and then the common concrete is poured; therefore, the waterproof performance of the self-repairing waterproof material in solving the waterproof weak part of the concrete structure under the high water pressure condition is verified. According to the invention, the test limitation that a traditional test body works without water pressure or under low water pressure is solved, and meanwhile, the problem that leakage test observation data under different pressures cannot be set is solved. The top cover and the lower box body are designed in a separated mode, the problem that the side wall of the totally-closed concrete box body is subjected to tensile stress can be effectively solved, and the stress state of the basement outer wall is truly simulated.

Description

Technical Field

[0001] The invention relates to a high-water-pressure detachable self-repairing concrete testing device and a manufacturing method thereof, and belongs to the technical field of waterproof material construction. Background Art

[0002] In the current engineering construction in my country, waterproof leakage is common, and the leakage in the basement of the building is particularly serious. According to a large number of surveys and statistics, the most common and serious leakage locations in the basement generally appear in weak waterproof locations such as post-cast strips, construction joints and through-wall pipes. The traditional waterproofing methods for these locations generally adopt construction joints, post-cast strips, buried or externally attached waterstops or buried waterstop strips, and through-wall pipes are provided with casings, waterstop steel rings and buried waterstop tapes to achieve the anti-leakage effect. Due to the lack of dense concrete vibration at key locations such as construction joints, post-cast strips, through-wall pipes, or defects in construction quality and construction procedures, these measures are difficult to prevent leakage under the current construction environment. How to improve the anti-leakage performance of weak waterproof locations such as post-cast strips, construction joints and through-wall pipes is of great significance. The present invention can greatly improve the leakage performance of the above-mentioned weak waterproof locations through the construction process of brushing or spraying a layer of new self-repairing waterproof material at the above-mentioned weak waterproof locations.

[0003] Generally, concrete test bodies for studying waterproof leakage phenomena are filled with water in an open concrete box for research and observation, and water pressure is basically not considered. The test results of this test body have great limitations, and it is impossible to verify the effectiveness of self-repairing permeable crystalline waterproof materials under high water pressure conditions in deep foundation pit underground projects and their performance such as sealing and sealing. Since most building basements are below the groundwater level, the basement floor and side walls are under different degrees of groundwater pressure. Therefore, in order to more accurately study and verify the waterproofing effect of self-repairing waterproof materials in weak waterproofing locations such as concrete basement post-cast joints, construction joints and wall pipes under pressure working conditions, and make the test conditions closer to the actual project, it is urgent to develop a high-water-pressure detachable self-repairing concrete test device and operation method. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the present invention proposes a high-water-pressure detachable self-repairing concrete testing device and a manufacturing method to solve the problem of accuracy test verification of the waterproof effect of self-repairing waterproof materials.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A high water pressure detachable self-repairing concrete test device, the test device comprising a separate concrete box, a fixing device, a sealing device and a water supply and drainage device; the separate concrete box comprises a bottom plate, a side wall and a top cover assembled together, the bottom plate comprises a box bottom plate and a box bottom plate post-casting strip; the side wall comprises a box side wall and a box side wall post-casting strip; the top cover comprises a box top cover and a top cover post-casting strip; the box bottom plate, the box side wall and the box top cover are provided with construction joints on the contact surfaces with other components of the separate concrete box; adjacent box bottom plates are connected by steel bars and cast with box bottom plate post-casting strips; adjacent box side walls are connected by steel bars and cast with box side wall post-casting strips; adjacent box top covers are connected by steel bars and cast with top cover post-casting strips;

[0007] The fixing device comprises a box body corbel, a top cover corbel, and a fastening bolt; the box body corbel is arranged on the post-cast strip of the box body side wall, the top cover corbel is arranged on the post-cast strip of the top cover, and the box body corbel and the top cover corbel are connected together by fastening bolts;

[0008] The sealing device includes a polymer latex waterproof glue and a rubber waterproof pad; wherein the top surface of the box side wall and the post-cast strip of the box side wall and the bottom surface of the box top cover are coated with a polymer latex waterproof glue, and the top surface of the polymer latex waterproof glue on the top surface of the side wall is also paved with a rubber waterproof pad;

[0009] The water supply and drainage device comprises a water inlet pipe and a drainage pipe; the water inlet pipe is arranged through the bottom of the side wall of the box body, and the drainage pipe is arranged through the top cover of the box body.

[0010] Furthermore, a water pressure gauge and a water inlet pipe valve are provided on the water inlet pipe, and a pressure pump is connected to the outside of the water inlet pipe; the top of the drain pipe extends out of the top cover of the box body, and a drain pipe valve is provided on the top.

[0011] Furthermore, the construction joints, the post-cast strips of the box bottom plate, the post-cast strips of the box side walls, the post-cast strips of the top cover, and the outer surfaces of the water inlet pipe and the drainage pipe are all coated with self-repairing waterproof material.

[0012] The manufacturing method of the high water pressure detachable self-repairing concrete testing device comprises the following steps:

[0013] S1. Formwork and reinforcement of the box bottom plate and box top cover of the separated concrete box: According to the construction process, first make the formwork of the box bottom plate and box top cover, then tie the reinforcement, and the lower bottom plate and upper cover plate are made simultaneously;

[0014] S2. Reserve post-cast strips and embed drainage pipes on the top cover of the box: The test body has multiple post-cast strips. Before pouring ordinary concrete, the sides of the post-cast strips need to be fixed with wire mesh to fully restore the construction process of the post-cast strips in the actual project. Before embedding the drainage pipes, the pipe wall should be coated with self-repairing waterproof materials;

[0015] S3. Pour the concrete of the bottom plate and top cover of the box body, use C30 commercial concrete, and do a good job of vibration and maintenance;

[0016] S4. Clean and roughen the side walls and construction joints of the box bottom plate: One week after the concrete pouring is completed, the mold is removed and the side walls and construction joints of the box bottom plate are cleaned and roughened;

[0017] S5. Apply self-repairing waterproof material to the construction joints, the post-cast strips of the box bottom plate, and the side walls of the post-cast strips of the top cover;

[0018] S6. Pre-embed the top cover corbel in the top cover post-casting belt and the water inlet pipe in the side wall of the box: According to the force analysis and calculation, determine the exact position of the fixing device on the box and the top cover, accurately fix the top cover corbel at the corresponding position of the top cover post-casting belt, and before pre-embedding the water inlet pipe, the pipe wall of the water inlet pipe needs to be coated with self-repairing waterproof material before pouring ordinary concrete;

[0019] S7. Pour concrete at the post-casting strips of the bottom plate, side walls and top cover of the box body. Use C30 ordinary commercial concrete, and do a good job of vibration and maintenance;

[0020] S8. Cleaning and roughening the side wall surface of the post-casting strip of the side wall of the box body: In S7, the formwork is removed one week after the concrete pouring is completed, and the side wall of the post-casting strip of the side wall of the box body and the horizontal construction joint position of the post-casting strip are cleaned and roughened;

[0021] S9. Apply self-repairing waterproof material to the side wall of the back-casting strip of the box side wall: first rinse the side wall of the back-casting strip of the box side wall with clean water, and directly apply the self-repairing waterproof material to the joints of the new and old concrete;

[0022] S10. Pre-embed the box corbels in the back-cast strips of the box side walls, and accurately fix the box corbels at the corresponding positions of the back-cast strips of the box side walls;

[0023] S11. Concrete pouring of the back-casting strip of the box side wall: C30 ordinary commercial concrete is used, and vibration and maintenance work is done well;

[0024] S12. Grind the top surface of the box body side wall and the post-cast strip of the box body side wall, and the bottom surface of the box body top cover to make it smooth: Use construction tools to grind the top surface of the side wall and the bottom surface of the top cover to make them smooth and level as much as possible, and minimize the gap on the concrete contact surface after the cover is closed;

[0025] S13. Apply high polymer latex waterproof glue to the top surface of the box side wall and the post-cast strip of the box side wall, and the bottom surface of the box top cover to improve the airtightness between the top cover and the side wall;

[0026] S14. Lay rubber waterproof pads on the top surface of the side wall: After the polymer emulsion waterproof glue is dry, lay rubber waterproof pads on the top surface of the side wall;

[0027] S15. Installation of the split concrete box: Use a small crane or forklift to lift the upper box cover, align the upper and lower mounting holes of the box bracket and the top cover bracket, install the fastening bolts, install the split concrete box, and then complete the installation process of the water pressure gauge, water inlet pipe valve, pressure water pump, and drainage pipe valve;

[0028] S16. The construction of the entire high-pressure detachable self-repairing concrete test device is completed, and the water pressure test begins.

[0029] Furthermore, in step S2, the lower end of the drain pipe should be flush with the bottom surface of the top cover and cannot exceed the concrete surface to prevent the air in the separated concrete box from being unable to be completely exhausted during the subsequent pressurized water delivery, thereby affecting the test results.

[0030] Furthermore, the self-repairing waterproof material is a cement-based penetrating crystalline waterproof material; the weight ratio of the self-repairing waterproof material to water is approximately 1:0.3. When in use, the materials are added in one go according to the mix ratio, and after being fully stirred until there are no particles, they need to be left to stand for 1 to 3 minutes, stirred again before use, and applied within 20 minutes.

[0031] Furthermore, the cement-based penetrating crystalline waterproof material is an active siliceous repair material.

[0032] Furthermore, the shape, wall thickness, number, position and type of fastening bolts of the box body corbels and top cover corbels are determined by finite element refined force analysis calculations. The number and position of the box body corbels and top cover corbels also need to be determined based on the size of the concrete box and the requirements of the simulated water pressure.

[0033] Furthermore, in step S14, the rubber waterproof pad is made of aviation rubber material with a thickness of 15 mm and a width of 80 mm.

[0034] Furthermore, in step S16, after the closing process is completed, the water flow debugging of the test device is carried out; the drain pipe valve needs to be kept open to inject water into the test device; the drain pipe valve is closed after there are no bubbles in the drain pipe and water is discharged evenly; then the water pressure gauge is observed, and the water pressure of the test device is pressurized to 0.3Mpa with a pressure pump and then the water inlet pipe valve is closed; at this time, the fastening bolts are adjusted to ensure that there is no water seepage around the rubber waterproof pad; after debugging, the test is observed to seep water in the traditional weak waterproof parts such as the concrete post-cast joints, construction joints, water inlet pipes, and drain pipes of the box body, as well as the waterproof effect of the dense crystallization of the later self-repairing waterproof material.

[0035] Compared with the prior art, the implementation of the present invention can achieve the following significant beneficial effects:

[0036] 1. A high-water-pressure detachable self-repairing concrete test device and a manufacturing method of the present invention are provided. The concrete box is divided into a bottom box and an upper concrete cover plate, which are constructed and poured separately (the construction joints and post-casting strips are carried out completely in accordance with the actual construction sequence of the project). Corbels are pre-embedded in the upper cover and the side walls of the bottom box. The concrete surface where the top of the box and the cover plate meet is polished and flat, and a waterproof rubber pad is set. The cover is then closed and fixed with bolts. The side walls and top cover of the box are pre-embedded with water inlet pipes and drainage pipes, and switches and pressure gauges are installed on the water pipes. Traditional concrete test bodies for studying waterproof leakage phenomena are filled with water in a concrete box with an open top for research and observation. The present invention realizes a concrete test body for detecting the performance of self-repairing concrete waterproof materials under high water pressure working mode through these processes, which solves the experimental limitations of traditional test bodies working without water pressure. At the same time, the problem of being unable to set leakage test observation data under different pressures is solved.

[0037] 2. The high-water-pressure detachable self-repairing concrete test device and its manufacturing method of the present invention are to grind the contact surfaces of the two concrete bodies flat, and then brush a certain thickness of polymer latex waterproof glue on the flat surface to completely seal the fine concave and convex holes on the concrete surface, and then set a waterproof rubber pad on the contact surface, and finally fix it with external force. The waterproof sealing problem between the surfaces of concrete blocks is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the construction steps of the present invention;

[0039] Figure 2 This is the first construction process of the test device of the present invention, including steps S1-S6;

[0040] Figure 3 The second construction process of the test device of the present invention includes steps S7-S10;

[0041] Figure 4 The third construction process of the test device of the present invention is step S11;

[0042] Figure 5 This is the fourth construction process of the test device of the present invention, including steps S12-S13;

[0043] Figure 6 The fifth construction step of the test device of the present invention is step S14;

[0044] Figure 7 The whole and last step of the construction process of the test device of the present invention includes steps S15-S16;

[0045] Figure 8 It is a partial schematic diagram of the fixing device of the present invention. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-8 The present invention is further described in detail with specific implementations to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0047] Example 1

[0048] like Figure 2-8 As shown, a high water pressure detachable self-repairing concrete testing device of the present invention comprises a separate concrete box, a fixing device, a sealing device and a drainage device.

[0049] like Figure 2-5 As shown, the separated concrete box includes a bottom plate, side walls and a top cover assembled together, and the bottom plate includes a box bottom plate 11 and a box bottom plate post-casting strip 12. The side walls include a box side wall 13 and a box side wall post-casting strip 14. The top cover includes a box top cover 15 and a top cover post-casting strip 16. Construction joints 17 are provided on the contact surfaces of the box bottom plate 11, the box side wall 13 and the box top cover 15 with other components of the separated concrete box. Adjacent box bottom plates 11 are connected by steel bars, and the box bottom plate post-casting strip 12 is cast. Adjacent box side walls 13 are connected by steel bars, and the box side wall post-casting strip 14 is cast. Adjacent box top covers 15 are connected by steel bars, and the top cover post-casting strip 16 is cast.

[0050] like Figure 7-8 As shown, the fixing device includes a box body corbel 21, a top cover corbel 22, and a fastening bolt 23. The box body corbel 21 is arranged on the box body side wall post-casting strip 14, and the top cover corbel 22 is arranged on the top cover post-casting strip 16. The box body corbel 21 and the top cover corbel 22 are connected together by fastening bolts 23.

[0051] like Figure 5-6 As shown, the sealing device includes a polymer latex waterproof glue 31 and a rubber waterproof pad 32. The top surface of the box side wall 13 and the box side wall post-casting strip 14, and the bottom surface of the box top cover 15 are coated with the polymer latex waterproof glue 31, and the top surface of the polymer latex waterproof glue 31 on the top surface of the side wall is also paved with a rubber waterproof pad 32.

[0052] like Figure 3 and Figure 7 As shown, the water supply and drainage device 4 includes a water inlet pipe 41 and a drainage pipe 45. The water inlet pipe 41 is arranged through the bottom of the box side wall 13, and the drainage pipe 45 is arranged through the box top cover 15. A water pressure gauge 42 and a water inlet pipe valve 43 are arranged on the water inlet pipe 41, and a pressure pump 44 is connected to the outside of the water inlet pipe 41. The top of the drainage pipe 45 extends out of the box top cover 15, and a drainage pipe valve 46 is arranged at the top.

[0053] In this embodiment, Figure 2-3As shown, the outer surfaces of the construction joint 17, the box bottom plate post-casting strip 12, the box side wall post-casting strip 14, the top cover post-casting strip 16, and the water inlet pipe 41 and the drainage pipe 45 are all coated with self-repairing waterproof material 18.

[0054] The separated concrete box body is made of ordinary commercial concrete. The joints such as the post-casting strips, construction joints, and through-wall pipes of the concrete box body are not subjected to traditional waterproof treatment. Instead, the self-repairing waterproof material 18 is applied on the surface of the weak waterproof parts such as the post-casting strips, construction joints, and through-wall pipes of the concrete structure, and then ordinary concrete is poured. This verifies the waterproof performance of the self-repairing waterproof material 18 in solving the weak parts of the concrete structure under high water pressure conditions. The top cover 15 of the concrete test device and the lower box body are separated, which can effectively eliminate the problem of tensile stress on the side wall of the fully enclosed concrete box body, and achieve a true simulation of the stress state of the basement exterior wall.

[0055] In this embodiment, the shape, wall thickness, number, position and type of fastening bolts of the box corbel 21 and the top cover corbel 22 are determined by finite element refined force analysis calculations. The number and position of the box corbel 21 and the top cover corbel 22 also need to be determined based on the size of the concrete box and the requirements of the simulated water pressure.

[0056] Example 2

[0057] The manufacturing method of the high water pressure detachable self-repairing concrete testing device of the above embodiment 1 is as follows: Figure 1 as well as Figure 2-7 As shown, the following steps are included:

[0058] S1. Figure 2 As shown, the box bottom plate 11 and the box top cover 15 of the separated concrete box 1 are partially supported by formwork and reinforced with steel bars: according to the construction process, the formwork of the box bottom plate 11 and the box top cover 15 is first made, and then the steel bars are tied, and the lower bottom plate and the upper cover plate are made simultaneously.

[0059] S2. Reserve post-casting strips, and embed drainage pipes 45 in the top cover 15 of the box: The test device has multiple post-casting strips. Before pouring ordinary concrete, the side of the post-casting strips needs to be fixed with a wire mesh to completely restore the construction process of the post-casting strips in the actual project. The self-repairing waterproof material 18 is applied to the pipe wall before the drainage pipe 45 is embedded. The lower end of the drainage pipe 45 should be flush with the bottom surface of the top cover and cannot exceed the concrete surface to prevent the air in the separated concrete box from being exhausted during the later pressurized water supply, affecting the test effect. In addition, the self-repairing waterproof material 18 is a cement-based permeable crystallization waterproof material with self-repairing function. It is a composite active component in the traditional components of concrete to form an intelligent self-repairing system. When the concrete material is cracked or damaged, it automatically triggers the repair reaction. The weight ratio of the self-repairing waterproof material to water is about 1:0.3. When used, the materials are added in one time according to the mix ratio. After being fully stirred until there is no particle, it needs to be left to stand for 1 to 3 minutes, stirred again before use, and applied within 20 minutes. In this embodiment, the self-repairing waterproof material used is Tongtai brand active siliceous repair material.

[0060] S3. Pour concrete for the bottom plate 11 and top cover 15 of the box body, using C30 commercial concrete, and perform vibration and maintenance.

[0061] S4. Cleaning and roughening the side walls of the post-casting zone 12 and the construction joint 17 of the box bottom plate: One week after the concrete pouring is completed, the mold is removed and the side walls of the post-casting zone 12 and the construction joint 17 of the box bottom plate are cleaned and roughened.

[0062] S5. The self-repairing waterproof material 18 is applied to the side walls of the construction joint 17, the box bottom plate post-casting strip 12, and the top cover post-casting strip 16. The top cover post-casting strip 16 does not adopt the traditional waterproofing measure of setting a water stop strip, but directly applies the self-repairing waterproof material 18 at the joint between the new and old concrete, so as to verify the waterproof effect of the self-repairing waterproof material in the traditional waterproof weak parts such as the post-casting strip and the construction joint.

[0063] S6. Pre-embed the top cover corbel 22 in the top cover post-cast strip 16 and the water inlet pipe 41 in the box side wall 13: According to the force analysis and calculation, determine the exact position of the fixing device on the box and the top cover, accurately fix the top cover corbel 22 at the corresponding position of the top cover post-cast strip 16, and before pre-embedding the water inlet pipe 41, the pipe wall of the water inlet pipe 41 needs to be coated with self-repairing waterproof material 18 before pouring ordinary concrete.

[0064] S7. Figure 3 As shown, concrete is poured at the bottom plate post-casting strip 12 of the box body, the side wall 13 of the box body and the top cover post-casting strip 16. The concrete adopts C30 ordinary commercial concrete, and vibration and maintenance work are done well.

[0065] S8. Cleaning and roughening the side wall surface of the post-casting strip 14 of the box side wall: In S7, the formwork is removed one week after the concrete pouring is completed, and the side wall of the post-casting strip 14 of the box side wall and the horizontal construction joint 17 on the epidermis of the post-casting strip are cleaned and roughened.

[0066] S9. Apply the self-repairing waterproof material 18 to the side wall of the box body side wall post-casting strip 14: first rinse the side wall of the box body side wall post-casting strip 14 with clean water, and directly apply the self-repairing waterproof material 18 to the joint between the new and old concrete.

[0067] S10. The box corbel 21 is embedded in the post-cast strip 14 of the box side wall, and the box corbel 21 is accurately fixed at the corresponding position of the post-cast strip 14 of the box side wall.

[0068] S11. Figure 4 As shown, concrete is poured into the post-cast strip 14 of the box side wall: C30 ordinary commercial concrete is used as the concrete, and vibration and maintenance work is done well.

[0069] S12. Figure 5 As shown, the top surface of the box side wall 13 and the box side wall post-cast strip 14, and the bottom surface of the box top cover 15 are polished for flatness: use construction tools to polish the top surface of the side wall and the bottom surface of the top cover to make them flat and keep them as level as possible, and minimize the gap on the concrete contact surface after the cover is closed.

[0070] S13. The top surfaces of the box side walls 13 and the box side wall post-casting strips 14 and the bottom surface of the box top cover 15 are coated with polymer latex waterproof glue 31 to improve the airtightness between the top cover and the side walls.

[0071] S14. Figure 6 As shown, a rubber waterproof pad 32 is laid on the top surface of the side wall: after the polymer emulsion waterproof glue 31 is dried, a rubber waterproof pad 32 is laid on the top surface of the side wall. The rubber waterproof pad 32 is made of aviation rubber material, with a thickness of 15 mm and a width of 80 mm.

[0072] S15. Figure 7 As shown, the split concrete box is installed as a whole: a small crane or a forklift is used to lift the upper box cover 15, the upper and lower mounting holes of the box body bracket 21 and the top cover bracket 22 are aligned, the fastening bolts 23 are installed, the split concrete box is installed as a whole, and then the installation process of the water pressure gauge 42, the water inlet pipe valve 43, the pressure water pump 44, and the drain pipe valve 46 is completed.

[0073] S16. The construction of the entire high-pressure detachable self-repairing concrete test device is completed, and the water pressure test is started. That is, after the closing process is completed, the water flow debugging of the test device is carried out. The drain pipe valve 46 needs to be kept open to fill the test device with water. Wait until there are no bubbles in the drain pipe 45 and the water flows out evenly before closing the drain pipe valve 46. Then observe the water pressure gauge 42, use the pressure pump 44 to pressurize the test device to 0.3Mpa water pressure, and then close the water inlet pipe valve 43. At this time, adjust the fastening bolts 23 to ensure that there is no water seepage around the rubber waterproof pad 32. After debugging, test and observe the leakage of traditional waterproof weak points such as concrete post-casting strips, construction joints, water inlet pipes 41, and drain pipes 45 in various parts of the box body, as well as the waterproof effect of the dense crystallization of the later self-repairing waterproof material.

[0074] The above is only a preferred embodiment of the present invention, and does not impose any formal limitation on the structure of the present invention. The layout type and the number of uses of the present invention are not limited to this example, and can be optimized and selected according to the actual project. Any modification, equivalent change and decoration of the above embodiment based on the technical principle of the present invention that does not deviate from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high water pressure detachable self-repairing concrete testing device, characterized in that: The test device comprises a separate concrete box, a fixing device, a sealing device and a water supply and drainage device; The separated concrete box comprises a bottom plate, a side wall and a top cover which are assembled together, wherein the bottom plate comprises a box bottom plate (11) and a box bottom plate post-casting strip (12); the side wall comprises a box side wall (13) and a box side wall post-casting strip (14); the top cover comprises a box top cover (15) and a top cover post-casting strip (16); the contact surfaces of the box bottom plate (11), the box side wall (13) and the box top cover (15) with other components of the separated concrete box are provided with construction joints (17); adjacent box bottom plates (11) are connected by steel bars and cast with box bottom plate post-casting strips (12); adjacent box side walls (13) are connected by steel bars and cast with box side wall post-casting strips (14); adjacent box top covers (15) are connected by steel bars and cast with top cover post-casting strips (16); The fixing device comprises a box body corbel (21), a top cover corbel (22), and a fastening bolt (23); the box body corbel (21) is arranged on the box body side wall post-casting strip (14), the top cover corbel (22) is arranged on the top cover post-casting strip (16), and the box body corbel (21) and the top cover corbel (22) are connected together by the fastening bolt (23); The sealing device comprises a polymer emulsion waterproof glue (31) and a rubber waterproof pad (32); wherein the top surface of the box body side wall (13) and the box body side wall post-casting strip (14) and the bottom surface of the box body top cover (15) are coated with the polymer emulsion waterproof glue (31), and the top surface of the polymer emulsion waterproof glue (31) on the top surface of the side wall is also paved with a rubber waterproof pad (32); The water supply and drainage device (4) comprises a water inlet pipe (41) and a drainage pipe (45); the water inlet pipe (41) is arranged through the bottom of the box side wall (13), and the drainage pipe (45) is arranged through the top cover (15) of the box.

2. The high water pressure detachable self-repairing concrete testing device according to claim 1 is characterized by: The water inlet pipe (41) is provided with a water pressure gauge (42) and a water inlet pipe valve (43), and the outside of the water inlet pipe (41) is connected to a pressure pump (44); the top of the drainage pipe (45) extends out of the box top cover (15), and the top end is provided with a drainage pipe valve (46).

3. The high water pressure detachable self-repairing concrete testing device according to claim 2 is characterized by: The outer surfaces of the construction joint (17), the box bottom plate post-casting strip (12), the box side wall post-casting strip (14), the top cover post-casting strip (16), and the water inlet pipe (41) and the drainage pipe (45) are all coated with a self-repairing waterproof material (18).

4. A method for manufacturing a high water pressure detachable self-repairing concrete testing device according to claim 3, characterized in that: The steps include: S1. The separate concrete box (1) of the box bottom plate (11) and the box top cover (15) part of the formwork tying steel bars: According to the construction process, first make the box bottom plate (11) and the box top cover (15) template, and then tie the steel bars, the lower floor and the upper cover are made simultaneously; S2. Reserved post-casting strips, pre-buried drainage pipes (45) on the top cover of the box (15): The test device has multiple post-casting strips. Before pouring ordinary concrete, the side of the post-casting strips needs to be fixed with a wire mesh to completely restore the actual post-casting strip construction process. The self-repairing waterproof material (18) is applied to the wall of the pre-buried drainage pipe (45); S3 pouring box bottom plate (11) and box top cover (15) concrete, using C30 commercial concrete, and do a good job of vibration, maintenance work; S4. The surface of the box body bottom plate (12) side wall and construction joint (17) is cleaned and roughened: the concrete pouring is completed one week after demoulding, and the side wall and construction joint (17) of the box body bottom plate are cleaned and roughened; S5. The construction joint (17), the box bottom plate post-casting strip (12), the top cover post-casting strip (16) and the side wall are coated with self-repairing waterproof material (18); S6. Pre-embedded top cover corbel (22) in the top cover post-casting strip (16) and pre-embedded water inlet pipe (41) in the box side wall (13): According to the force analysis calculation, determine the exact position of the fixing device on the box and the top cover, accurately fix the top cover corbel (22) at the corresponding position of the top cover post-casting strip (16), and before the water inlet pipe (41) is pre-embedded, the wall of the water inlet pipe (41) needs to be coated with self-repairing waterproof material (18) before pouring ordinary concrete; S7. Pour concrete at the bottom plate of the box (12), the side wall of the box (13) and the top cover (16). The concrete is C30 ordinary commercial concrete, and vibration and maintenance are done well; S8. Clean and roughen the side wall surface of the box body after pouring (14): In S7, the concrete pouring is completed one week after demoulding, and the side wall of the box body after pouring (14) and the horizontal construction joint (17) of the epithelium are cleaned and roughened; S9. Apply self-repairing waterproof material (18) to the side wall of the box body after pouring the strip (14): First, rinse the side wall of the box body after pouring the strip (14) with clean water, and directly apply the self-repairing waterproof material (18) at the joint between the new and old concrete; S10. The box side wall post-casting strip (14) is embedded in the box body corbel (21), and the box body corbel (21) is accurately fixed at the corresponding position of the box side wall post-casting strip (14); S11. Concrete pouring of the back-cast strip (14) of the side wall of the box: C30 ordinary commercial concrete is used, and vibration and curing work is done well; S12. The top surface of the box side wall (13) and the box side wall post-casting strip (14), the bottom surface of the box top cover (15) is polished for smoothness: Use construction tools to polish the top surface of the side wall and the bottom surface of the top cover and try to ensure the level, and try to minimize the gap between the concrete contact surfaces after closing the cover; S13. The top surface of the box side wall (13) and the box side wall post-casting strip (14), the bottom surface of the box top cover (15) is coated with a polymer latex waterproof glue (31) to improve the airtightness between the top cover and the side wall; S14. Laying a rubber waterproof pad on the top of the side wall (32): After the polymer emulsion waterproof glue (31) is dried, laying a rubber waterproof pad on the top of the side wall (32); S15. Separate concrete box body installation: Use a small crane or forklift to lift the upper box cover (15), align the upper and lower mounting holes of the box bracket (21) and the top cover bracket (22), install the fastening bolts (23), and install the separate concrete box body together, and then complete the water pressure gauge (42), the water inlet valve (43), the pressure pump (44), and the drain valve (46) installation process; S16. The construction of the entire high-pressure detachable self-repairing concrete test device is completed, and the water pressure test begins.

5. The method according to claim 4, characterized in that: In step S2, the lower end of the drainage pipe (45) should be flush with the bottom surface of the top cover and should not exceed the concrete surface to prevent the air in the separated concrete box from being completely exhausted during the subsequent pressurized water delivery, thereby affecting the test results.

6. The method according to claim 4, characterized in that: The self-repairing waterproof material (18) is a cement-based permeable crystallization waterproof material; the weight ratio of the self-repairing waterproof material to water is about 1:0.

3. When in use, the materials are added in one go according to the mixing ratio, and after being fully stirred until there are no particles, they need to be left to stand for 1 to 3 minutes, stirred again before use, and applied within 20 minutes.

7. The method according to claim 6, characterized in that: The cement-based penetrating crystalline waterproof material is an active siliceous repair material.

8. The method according to claim 4, characterized in that: The shape, wall thickness, number, position and type of fastening bolts of the box body corbel (21) and the top cover corbel (22) are all determined by finite element refined force analysis calculation. The number and position of the box body corbel (21) and the top cover corbel (22) also need to be determined according to the size of the concrete box and the requirements of the simulated water pressure.

9. The method according to claim 4, characterized in that: In the step S14, the rubber waterproof pad (32) is made of aviation rubber material with a thickness of 15 mm and a width of 80 mm.

10. The manufacturing method according to claim 4, characterized in that: In step S16, after the closing process is completed, the test device is debugged for water flow; the drain pipe valve (46) needs to be kept in an open state to inject water into the test device; the drain pipe valve (46) is closed after there are no bubbles in the drain pipe (45) and water is discharged evenly; then the water pressure gauge (42) is observed, and the test device is pressurized to 0.3Mpa water pressure with a pressure pump (44) and then the water inlet pipe valve (43) is closed; at this time, the fastening bolts (23) are adjusted to ensure that the rubber waterproof pad (32) is water-proof around; after debugging is completed, a test is conducted to observe the leakage of traditional waterproof weak points such as the concrete post-casting strips, construction joints, water inlet pipes (41), and drain pipes (45) of the box body and the waterproof effect of the dense crystallization of the late self-repairing waterproof material.

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