Thin-wall pool body structure concrete self-protection material, system and control method

Abstract

The invention discloses a thin-wall pool body structure concrete self-protection material and system and a control method, and mainly relates to the field of thin-wall pool body protection. Comprising low-heat Portland cement, nano silicon dioxide, activated aluminum oxide powder, a short-chain polycarboxylate superplasticizer, self-repairing balls and memory alloy fibers. The self-repairing ball comprises a stress repairing ball and a pH value repairing ball, urea resin is arranged outside the stress repairing ball, and epoxy resin is loaded inside the stress repairing ball; the outer part of the pH value repairing ball is a polymethyl methacrylate-acrylic acid copolymer, and the inner part of the pH value repairing ball is provided with a flexible epoxy resin prepolymer. The method has the beneficial effects that the method is used for the thin-wall pool body, the self-repairing effect after the pool body is cracked can be achieved, zoning matching and zoning pouring are conducted according to the characteristics of the sewage pool body, and therefore the thin-wall pool body is protected more comprehensively, and self-repairing of the sewage pool body is achieved step by step. And meanwhile, the water stop belt is protected through the composite water stop structure, and self-expansion can be conducted to fill gaps once leakage occurs.

Description

Technical Field

[0001] This invention relates to the field of thin-walled pool protection, specifically a self-protective concrete material, system, and control method for thin-walled pool structures. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In the complex architecture of the entire wastewater treatment system, the wastewater tanks are undoubtedly the core. Whether it's a screen tank, acidification tank, biological reaction tank, or sedimentation tank, these structures bear wastewater containing large amounts of organic matter, acids, alkalis, heavy metal ions, and microorganisms day after day. Their structural stability determines whether the wastewater treatment process can operate continuously. Once cracks or leaks occur, not only will treated wastewater overflow, polluting the surrounding soil and groundwater, but it may also force the entire treatment system to shut down for maintenance, causing huge economic losses and environmental risks. For thin-walled tanks, the thin wall design results in inherently insufficient resistance to cracking and deformation. They are subjected to harsh environmental conditions, enduring the infiltration and corrosive pressure of internal wastewater (containing acids, alkalis, salts, and microorganisms), as well as the multiple effects of external groundwater, soil pressure, and changes in temperature and humidity. Traditional construction methods rely on a passive protection mode of concrete body + external additional coating. The external coating is subject to aging and peeling risks, and once the thin-walled concrete itself cracks, corrosive media will penetrate deeply, making repair extremely difficult. There is an urgent need for a technology that starts from the concrete structure itself and enables it to have active defense and adaptive repair capabilities through material modification, structural reinforcement and intelligent control. Summary of the Invention

[0004] The purpose of this invention is to provide a self-protective concrete material, system, and control method for thin-walled tank structures. Applied to thin-walled tanks, it enables self-repair after cracking. Furthermore, it allows for zoned mixing and pouring according to the characteristics of the sewage tank, providing more comprehensive protection and gradually achieving self-repair. Simultaneously, a composite water-stop structure protects the waterstop area, preventing sewage leakage along it. In the event of leakage, it self-expands to fill the gaps and stop the leakage process. During the curing pouring process, it reduces the impact of external temperature on the curing liquid, preventing excessive evaporation, and allows for selection of the curing medium based on the external temperature.

[0005] To achieve the above objectives, the present invention employs the following technical solution: A self-protective concrete material for thin-walled pool structures comprises low-heat silicate cement, nano-silica, activated alumina powder, short-chain polycarboxylate superplasticizer, self-healing spheres, and shape memory alloy fibers. The self-healing sphere includes a stress-repairing sphere and a pH-repairing sphere. The stress-repairing sphere is made of urea-formaldehyde resin on the outside and contains epoxy resin on the inside. The pH-repairing sphere is made of polymethyl methacrylate-acrylic acid copolymer on the outside and contains a flexible epoxy resin prepolymer on the inside.

[0006] A self-protection system for thin-walled pool structures: comprising a thin-walled pool body, multiple functional zones disposed within the thin-walled pool body, a waterproof structure disposed within the thin-walled pool body, an adaptive curing device, and a control system; Multiple temperature and humidity sensors are embedded in the multiple functional areas. The multiple functional areas include a surface area, a transition area, and a core area. The volume fraction of the self-healing spheres in the multiple functional areas gradually increases and the content of the shape memory alloy fiber gradually decreases. When pouring concrete, it is poured from the surface area to the core area. After pouring, the concrete surface is cured by an adaptive curing device. The adaptive maintenance device includes a maintenance component connected to the pre-embedded steel bar, a limiting module set on the pre-embedded steel bar, and a power source component; The curing component includes a temperature control chamber and a curing chamber. The power source component controls the internal pressure of the temperature control chamber. The bottom surface of the curing chamber is in contact with the concrete. The bottom surface of the curing chamber is provided with multiple curing holes. The power source component can also introduce curing liquid into the curing chamber. The control system controls the internal pressure and medium of the temperature control chamber based on the external ambient temperature, and determines the spraying time of the curing liquid inside the concrete curing chamber according to the temperature and humidity inside the functional area.

[0007] The volume fraction of stress repair spheres in the surface area is 2-3%, pH repair spheres is 6-8%, and shape memory alloy fiber content is 2-3%; the volume fraction of stress repair spheres in the transition area is 3-4%, pH repair spheres is 4-5%, and shape memory alloy fiber content is 1-2%; the volume fraction of stress repair spheres in the core area is 1-2%, pH repair spheres is 2-3%, and shape memory alloy fiber content is 0.5-1%.

[0008] Both the temperature control chamber and the curing chamber are airbags, and an electromagnetic flow control valve connects the temperature control chamber and the curing chamber. The curing chamber is located at the bottom of the temperature control chamber, and the cross-section of the curing chamber is an isosceles trapezoid. The curing chamber is equipped with a connecting strip, and the corners of the connecting strip are sleeved with the pre-embedded steel bars.

[0009] The limiting module consists of multiple locking sleeves, each embedded steel bar is provided with a locking sleeve, the connecting band is located between two locking sleeves, and the locking sleeve is provided with a set screw inside; The power source assembly includes two air pumps, the media of which include water mist, steam, air, or maintenance fluid.

[0010] The waterproof structure includes clamps set on the reinforcing bars and a water-stop steel plate connected to the clamps; A limiting structure is provided between the clamp and the water-stop steel plate, which is used to limit and lock the water-stop steel plate.

[0011] The limiting structure includes multiple clamps set on the steel reinforcement frame, a connecting seat set on the waterstop steel plate, and a limiting rod connected to the connecting seat; The number of connecting seats is adapted to the number of clamps. The clamps are sleeved with the reinforcing steel skeleton. The opening of the clamp is provided with two connecting plates. The inner diameter of the clamp is smaller than the outer diameter of the reinforcing steel skeleton. The connecting plates are provided with two fastening holes. Fasteners are provided at the fastening holes. The limiting rod is provided with two limiting ports adapted to the fasteners.

[0012] The water-stop steel plate has multiple interlocking teeth on its edge, and a placement groove is provided in the middle of the water-stop steel plate. The placement groove contains a water-swellable water-stop strip with built-in conductive fibers. The water-swellable water-stop strip has a limiting protrusion that is adapted to the placement groove. A locking element is provided between the placement groove and the water-swellable water-stop strip.

[0013] The placement groove has an isosceles trapezoidal cross section. The short side of the placement groove is adapted to the outer diameter of the limiting protrusion of the water-swellable waterproofing strip. The locking member is engaged with the outer side of the limiting protrusion of the water-swellable waterproofing strip and is located inside the placement groove.

[0014] A control method for a concrete self-protection system of a thin-walled pool structure, S1, installing a water-stopping structure and arranging a temperature and humidity sensor monitoring point every 3 square meters; S2. The concrete is mixed according to the material composition of each zone and then poured. For the surface zone, the pouring speed is 3-5 m / min and the vibration frequency is 100 Hz-120 Hz; for the transition zone, the pouring speed is 5-8 m / min and the vibration frequency is 70 Hz-80 Hz; for the core zone, the pouring speed is 8-12 m / min and the vibration frequency is 40 Hz-60 Hz; the interval between each layer is greater than or equal to 20 minutes. S3. After pouring and removing the formwork, install the curing device, select the curing medium inside the curing chamber according to the external ambient temperature, spray continuously and monitor in real time, and judge based on the humidity results. If the humidity difference between the surface area and other areas is less than or equal to 4%, stop spraying and cover the concrete surface with the temperature control chamber. When the humidity difference between the surface area and other areas exceeds the range, start spraying again and repeat the above process. For S4, during the 14-28 day maintenance period, use intermittent spraying to slowly dry until the internal humidity is balanced with the environment.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Used for thin-walled tanks, it enables self-repair after cracking. It allows for zoned mixing and pouring based on the characteristics of the wastewater tank, providing more comprehensive protection and gradually achieving self-repair. Simultaneously, a composite water-stop structure protects the waterstop area, preventing wastewater leakage along it. If leakage occurs, it self-expands to fill the gaps and stop the leakage process. During the curing pouring process, it reduces the impact of external temperature on the curing solution, preventing excessive evaporation, and allows for selection of the curing medium based on external temperature. Attached Figure Description

[0016] Appendix Figure 1 This is a view of the maintenance device and functional areas of the present invention.

[0017] Appendix Figure 2 This is a view of the water-stopping steel plate in this invention.

[0018] Appendix Figure 3 This is a view of the water-stopping structure in this invention.

[0019] Appendix Figure 4 This is a view of the clamp in this invention.

[0020] Appendix Figure 5 This is a view of the waterstop in this invention.

[0021] Appendix Figure 6 This is a view of the connecting rod in this invention.

[0022] Appendix Figure 7 This is a bottom view of the curing chamber in this invention.

[0023] Appendix Figure 8 This is a view of the maintenance device in this invention.

[0024] The labels shown in the attached diagram: 1. Surface area; 2. Transition area; 3. Core area; 4. Temperature control chamber; 5. Curing chamber; 6. Curing hole; 7. Connecting belt; 8. Locking sleeve; 9. Clamp; 10. Water-stop steel plate; 11. Connecting seat; 12. Limiting rod; 13. Fastener; 14. Limiting port; 15. Engaging teeth; 16. Water-swellable water-stop strip; 17. Limiting protrusion; 18. Locking component. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0026] This invention describes a self-protective concrete material for thin-walled pool structures. The components include low-heat silicate cement, nano-silica, activated alumina powder, and short-chain polycarboxylate superplasticizer. These are common concrete components and will not be described in detail. The material includes self-healing spheres and shape memory alloy fibers. The self-healing spheres include stress-repairing spheres and pH-repairing spheres. The stress-repairing spheres have a diameter of 50-80 micrometers, and the pH-repairing spheres have a diameter of 10-20 micrometers. The stress-repairing spheres have an outer shell of urea-formaldehyde resin and an inner layer of epoxy resin. The pH-repairing spheres have an outer shell of polymethyl methacrylate-acrylic acid copolymer and an inner layer of flexible epoxy resin prepolymer. The stress-repairing spheres have a mechanically stress-sensitive outer shell and an inner layer of urea-formaldehyde resin. When cracks appear in the pool structure, the generated mechanical stress triggers the release of urea-formaldehyde resin, thereby repairing the cracks. The pH-repairing balls are made of a sensitive polymer shell with an internal curing agent. When wastewater enters the tank, the alkaline environment inside the concrete changes. When the pH is less than 10, the internal curing agent is released, repairing cracks or pores. Stress-repairing balls and pH-repairing balls mix and cure at the cracks, thus filling them. Shape memory alloy fibers, composed of Ni-Ti alloy, have a phase transformation temperature adapted to the temperature fluctuation range of the wastewater. The fibers undergo a phase transformation upon temperature change, generating a restoring force that can recover up to 8% of the strain, actively closing micro-cracks.

[0027] To achieve a better "self-healing effect," the spatial functional distribution needs to be calculated based on the stress characteristics and corrosive environment of the thin-walled pool. Therefore, the pool is poured in sections, resulting in multiple functional zones within the thin-walled pool, including a surface zone 1, a transition zone 2, and a core zone 3. The ratio of the surface zone 1 to the transition zone 2 to the core zone 3 relative to the outer wall thickness of the pool is 1:1:2. Within these functional zones, the volume fraction of self-healing spheres gradually increases while the content of shape memory alloy fibers gradually decreases. Specifically, the surface zone 1 has a stress-repairing sphere volume fraction of 2-3%, an acid-base repairing sphere volume fraction of 6-8%, and a shape memory alloy fiber content of 2-3%. The transition zone... The volume fraction of stress-repairing spheres in the 2nd layer is 3-4%, pH-repairing spheres are 4-5%, and shape memory alloy fiber content is 1-2%. In the core area, the volume fraction of stress-repairing spheres is 1-2%, pH-repairing spheres are 2-3%, and shape memory alloy fiber content is 0.5-1%. For each repair zone, the volume fraction is determined by the service environment and damage mechanism of the thin-walled tank. For sewage tanks, the most severe environment is the internal sewage, which contains various corrosive media. Therefore, corrosion and penetration develop from the inside of the sewage tank outwards, while structural damage develops from the outside inwards. Thus, the volume fraction of self-repairing spheres gradually increases from the surface area 1 to the core area 3, while the shape memory alloy fiber content gradually decreases. Therefore, when pouring concrete, it should be poured from the surface area 1 to the core area 3, i.e., from the inner wall of the tank to the outer wall.

[0028] For the overall construction process of thin-walled pools, since the bottom and side walls of the pool are poured separately, leakage may occur at the connection. Therefore, a waterproof structure needs to be set up, including clamps 9 set on the steel bars and water-stop steel plates 10 connected to the clamps 9. A limiting structure is provided between the clamp 9 and the waterstop steel plate 10. The limiting structure is used to limit and lock the waterstop steel plate 10. The limiting structure includes multiple clamps 9 set on the steel reinforcement skeleton, a connecting seat 11 set on the waterstop steel plate 10, and a limiting rod 12 connected to the connecting seat 11. The connecting seat 11 is fixed by the clamp 9, so the number of connecting seats 11 is matched with the number of clamps 9. The clamp 9 is sleeved with the steel reinforcement cage. The opening of the clamp 9 is provided with two connecting plates. The inner diameter of the clamp 9 is smaller than the outer diameter of the steel reinforcement cage. The connecting plate is provided with two fastening holes. Fasteners 13 are provided at the fastening holes. The limiting rod 12 is provided with two limiting ports 14 that are matched with the fasteners 13.

[0029] Fastener 13 consists of bolts and nuts, which connect the connecting plates at the opening and lock the clamp 9 onto the reinforcing bar. To limit the movement of the waterstop steel plate 10, the spacing between the two connecting plates needs to be controlled when fastener 13 is in place, ensuring that the insertion of the limiting rod 12 does not affect the tightening effect of the clamp 9. The two limiting ports 14 are semicircles, with the opening facing upwards near the clamp 9 and downwards near the waterstop steel plate 10. When the limiting rod 12 is inserted, it engages with the bolts of fastener 13. The bolts on the waterstop steel plate 10 side act as pivots, and the bolts on the clamp 9 side form a limiting relationship with the limiting ports 14, thereby limiting and fixing the waterstop steel plate 10.

[0030] For the waterstop steel plate 10, in order to improve the interlocking between the waterstop steel plate 10 and the concrete, multiple interlocking teeth 15 are provided on the edge of the waterstop steel plate 10. To further prevent sewage leakage, a 2.5mm thick solvent-free epoxy ceramic coating is sprayed on the outer layer of the waterstop steel plate 10, thereby improving the corrosion resistance of the waterstop steel plate 10. In order to fill the gaps where sewage leakage occurs, a placement groove is provided in the middle of the waterstop steel plate 10. The placement groove has an isosceles trapezoidal cross section. The placement groove contains a water-swellable waterstop strip 16 with built-in conductive fibers. The conductivity of the built-in conductive fibers can be used to determine the damage condition of the waterstop strip. The limiting protrusion 17 of the water-swellable waterstop 16 is adapted to the placement groove. The short side of the placement groove is adapted to the outer diameter of the limiting protrusion 17 of the water-swellable waterstop 16, so that the edge of the limiting protrusion 17 of the water-swellable waterstop 16 is inserted into the placement groove to form a snap-fit. In order to further improve the connection effect between the two, a locking member 18 is provided between the placement groove and the water-swellable waterstop 16. The locking member 18 is snapped into the outer side of the limiting protrusion 17 of the water-swellable waterstop 16 in the placement groove. The locking member 18 passes through the limiting protrusion 17 of the waterstop and connects with the waterstop. If the waterstop is subjected to tension, the locking member 18 clamps the waterstop. Multiple placement grooves, locking members 18, and limiting protrusions 17 can be provided to connect and limit the waterstop steel plate 10 and the waterstop at different parts.

[0031] After pouring, the concrete surface is cured by an adaptive curing device. Multiple temperature and humidity sensors are pre-embedded in the multiple functional areas. The adaptive curing device controls the curing according to the data of the temperature and humidity sensors. It includes a curing component connected to the pre-embedded steel bar, a limiting module set on the pre-embedded steel bar, and a power source component. The curing assembly includes a temperature control chamber 4 and a curing chamber 5, both of which are air-filled. Since ambient temperature affects the moisture content in concrete, the temperature control chamber 4 is filled with air to prevent external temperatures from influencing the curing process. Air has a much lower thermal conductivity than solid materials. When heat from outside the temperature control chamber 4 or inside the curing chamber 5 passes through the air layer, the temperature control chamber 4 blocks heat transfer and external radiation, further reducing the heat conduction rate. This reduces the impact of external temperatures on the penetration effect of the curing chamber 5 during concrete curing. The power source assembly includes two air pumps: one to control the gas inside the temperature control chamber 4, and the other to control the medium inside the curing chamber 5. The medium delivered by the air pumps includes water mist, steam, air, or curing liquid.

[0032] An electromagnetic flow control valve connects the temperature control chamber 4 and the curing chamber 5. The curing chamber 5 is located at the bottom of the temperature control chamber 4 and has an isosceles trapezoidal cross-section. Multiple curing holes 6 are located on the bottom surface of the curing chamber 5. During curing in the curing chamber 5, the air pump's delivery medium is selected based on the external temperature and the curing stage. The delivery medium is sprayed onto the concrete surface through the curing holes 6, thus curing the thin-walled tank. For the curing process, it is necessary to ensure that the concrete humidity is ≥95% and <98% for at least 14 days to activate the material. During curing in the curing chamber 5, the rate of moisture penetration into the concrete and the evaporation rate of the concrete surface are affected by the external temperature. Taking winter and summer as examples, the external temperature is low and the penetration efficiency is low at night in winter. Therefore, during curing, steam is delivered into the curing chamber 5 by an air pump. At the same time, the air inside the temperature control chamber 4 isolates the steam inside the curing chamber 5 from the outside, thereby slowing down heat conduction. When the humidity inside the concrete is too high, the delivery of steam needs to be stopped. At this time, the pressure inside the curing chamber 5 decreases, covering the concrete surface. The temperature control chamber 4 blocks the outside air. However, when the temperature is below the critical point, the temperature control chamber 4 is connected to the curing chamber 5, and the air pump delivers hot air into the temperature control chamber 4, thereby playing a role in temperature regulation.

[0033] In summer, the high temperature and rapid evaporation rate of moisture cause the water mist transported inside curing chamber 5 to monitor the internal humidity of the concrete in real time using temperature and humidity sensors. This controls the start and stop of the air pump. After curing chamber 5 loses pressure, the water mist gradually covers the concrete surface, reducing moisture evaporation. Simultaneously, curing chamber 5 controls heat transfer. Temperature control chamber 4 is still affected by temperature, so its internal gas needs to be replaced periodically to improve insulation performance.

[0034] Because the curing chamber 5 serves as a channel for the curing liquid spray and a cover during curing, and the internal pressure of the curing chamber 5 changes under these two functions, its position also changes. To limit the position of the temperature control chamber 4, a connecting band 7 is provided at the bottom edge of the curing chamber, and the corners of the connecting band 7 are sleeved with the pre-embedded steel bars. The limiting module consists of multiple locking sleeves 8, with a locking sleeve 8 on each pre-embedded steel bar. The connecting band 7 is located between two locking sleeves 8, and each locking sleeve 8 has a set screw inside. The locking sleeve 8 is locked in place by the set screw, thereby preventing the bottom of the curing chamber 5 from detaching from the concrete surface.

[0035] The above describes the structural portion of this application. The control method of this application needs to be considered in conjunction with the features of the above structural portion: S1, install a water-stop structure and place a temperature and humidity sensor monitoring point every 3 square meters; S2. The concrete is mixed according to the material composition of each zone and then poured. For the surface zone 1, the pouring speed is 3-5 m / min and the vibration frequency is 100 Hz-120 Hz; for the transition zone 2, the pouring speed is 5-8 m / min and the vibration frequency is 70 Hz-80 Hz; for the core zone 3, the pouring speed is 8-12 m / min and the vibration frequency is 40 Hz-60 Hz; the interval between each layer is greater than or equal to 20 minutes. For the surface zone 1, which serves as the inner wall of the sewage tank, the pouring speed should be slow and the vibration frequency should be high to ensure that all parts are dense.

[0036] S3. After pouring and removing the formwork, install the curing device. Select the curing medium inside the curing chamber 5 according to the external ambient temperature, spray continuously and monitor in real time. Judge based on the humidity results. If the humidity difference between the surface area 1 and other areas is less than or equal to 4%, stop spraying and cover the concrete surface with the temperature control chamber 4. When the humidity difference between the surface area 1 and other areas exceeds the range, restart spraying and repeat the above process. For S4, during the 14-28 day maintenance period, use intermittent spraying to slowly dry until the internal humidity is balanced with the environment.

Claims

1. A self-protective concrete material for thin-walled pool structures, characterized in that: The components include low-heat silicate cement, nano-silica, activated alumina powder, short-chain polycarboxylate superplasticizer, self-healing spheres, and shape memory alloy fibers; The self-healing sphere includes a stress-repairing sphere and a pH-repairing sphere. The stress-repairing sphere is made of urea-formaldehyde resin on the outside and contains epoxy resin on the inside. The pH repair ball has a polymethyl methacrylate-acrylic acid copolymer on the outside and a flexible epoxy resin prepolymer on the inside.

2. A self-protection system for thin-walled pool structures made of concrete, characterized in that: It includes a thin-walled pool body, multiple functional areas set within the thin-walled pool body, a waterproof structure set within the thin-walled pool body, an adaptive maintenance device, and a control system; Multiple temperature and humidity sensors are embedded in the multiple functional areas. The multiple functional areas include a surface area (1), a transition area (2), and a core area (3). The volume fraction of the self-healing spheres in the multiple functional areas gradually increases and the content of memory alloy fiber gradually decreases. When pouring concrete, it is poured from the surface area (1) to the core area (3). After pouring, the concrete surface is cured by an adaptive curing device. The adaptive maintenance device includes a maintenance component connected to the pre-embedded steel bar, a limiting module set on the pre-embedded steel bar, and a power source component; The curing component includes a temperature control chamber (4) and a curing chamber (5). The power source component controls the internal pressure of the temperature control chamber (4). The bottom surface of the curing chamber (5) is in contact with the concrete. The bottom surface of the curing chamber (5) is provided with multiple curing holes (6). The power source component can also introduce curing liquid into the curing chamber (5). The control system controls the internal pressure and medium of the temperature control chamber (4) based on the external ambient temperature, and controls the spraying time of the curing liquid inside the concrete curing chamber (5) according to the temperature and humidity inside the functional area.

3. The self-protection system for thin-walled pool structures according to claim 2, characterized in that: The surface area (1) has the following volume fraction of stress repair spheres: 2-3%, pH repair spheres: 6-8%, and shape memory alloy fiber content: 2-3%. The volume fraction of stress repair spheres in the transition zone (2) is 3-4%, the acid-base repair spheres are 4-5%, and the content of shape memory alloy fibers is 1-2%. The volume fraction of stress repair spheres in the core area (3) is 1-2%, acid-base repair spheres are 2-3%, and the content of shape memory alloy fiber is 0.5-1%.

4. The self-protection system for thin-walled pool structures according to claim 2, characterized in that: Both the temperature control chamber (4) and the curing chamber (5) are airbags. An electromagnetic flow control valve is provided between the temperature control chamber (4) and the curing chamber (5). The curing chamber (5) is located at the bottom of the temperature control chamber (4). The cross-section of the curing chamber (5) is an isosceles trapezoid. The curing chamber (5) is provided with a connecting strip (7), and the corners of the connecting strip (7) are connected to the pre-embedded steel bars.

5. The self-protection system for thin-walled pool structures according to claim 4, characterized in that: The limiting module consists of multiple locking sleeves (8), each pre-embedded steel bar is provided with a locking sleeve (8), the connecting band (7) is located between two locking sleeves (8), and the locking sleeve (8) is provided with a set screw inside; The power source assembly includes two air pumps, the media of which include water mist, steam, air, or maintenance fluid.

6. The self-protection system for thin-walled pool structures according to claim 1, characterized in that: The waterproof structure includes a clamp (9) set on the reinforcing bar and a water-stop steel plate (10) connected to the clamp (9). A limiting structure is provided between the clamp (9) and the water-stop steel plate (10), and the limiting structure is used to limit and lock the water-stop steel plate (10).

7. The self-protection system for thin-walled pool structures according to claim 6, characterized in that: The limiting structure includes multiple clamps (9) set on the steel reinforcement frame, a connecting seat (11) set on the waterstop steel plate (10), and a limiting rod (12) connected to the connecting seat (11). The number of connecting seats (11) is matched with the number of clamps (9). The clamps (9) are sleeved with the steel reinforcement cage. The opening of the clamps (9) is provided with two connecting plates. The inner diameter of the clamps (9) is smaller than the outer diameter of the steel reinforcement cage. The connecting plates are provided with two fastening holes. Fasteners (13) are provided at the fastening holes. The limiting rod (12) is provided with two limiting ports (14) that are matched with the fasteners (13).

8. The self-protection system for thin-walled pool structures according to claim 7, characterized in that: The water-stop steel plate (10) has multiple interlocking teeth (15) on its edge. The water-stop steel plate (10) has a placement groove in the middle. The placement groove has a water-swellable water-stop strip (16) with built-in conductive fibers. The water-swellable water-stop strip (16) has a limiting protrusion (17). The limiting protrusion (17) is adapted to the placement groove. A locking element (18) is provided between the placement groove and the water-swellable water-stop strip (16).

9. The self-protection system for thin-walled pool structures according to claim 8, characterized in that: The placement groove has an isosceles trapezoidal cross section. The short side of the placement groove is matched with the outer diameter of the limiting protrusion (17) of the water-swellable waterproofing strip (16). The locking member (18) is engaged with the outer side of the limiting protrusion (17) of the water-swellable waterproofing strip (16). The locking member (18) is located inside the placement groove.

10. A control method for a concrete self-protection system for thin-walled pool structures according to any one of claims 1-10, characterized in that: S1, install a water-stop structure and place a temperature and humidity sensor monitoring point every 3 square meters; S2, the concrete is mixed according to the material composition of each zone and poured. For the surface zone (1), the pouring speed is 3-5m / min and the vibration frequency is 100Hz-120hz; for the transition zone (2), the pouring speed is 5-8m / min and the vibration frequency is 70Hz-80hz; for the core zone (3), the pouring speed is 8-12m / min and the vibration frequency is 40Hz-60hz; the interval between each layer is greater than or equal to 20 minutes. S3. After pouring and removing the formwork, install the curing device, select the curing medium inside the curing chamber (5) according to the external ambient temperature, spray continuously and monitor in real time, and judge according to the humidity results. If the humidity difference between the surface area (1) and other areas is less than or equal to 4%, stop spraying and cover the concrete surface with the temperature control chamber (4). When the humidity difference between the surface area (1) and other areas exceeds the range, start spraying again and repeat the above process. For S4, during the 14-28 day maintenance period, use intermittent spraying to slowly dry until the internal humidity is balanced with the environment.

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