Aqueduct expansion joint leakage water treatment structure

Abstract

The utility model discloses an aqueduct expansion joint leakage water treatment structure, belongs to the technical field of expansion joint treatment, and can solve the problems that a traditional expansion joint leakage water treatment mode is poor in repairing effect, complex in construction, large in difficulty and long in construction period. The structure comprises an anti-seepage adhesive layer arranged on the inner surface of the expansion joint; the flexible water stop material is embedded and filled in the expansion joint; the interface treatment layer is arranged on the concrete surfaces of the top and the two sides of the expansion joint; and the polyurea unit is arranged on the interface processing layer and is used for isolating external water vapor from entering the interface processing layer. The aqueduct expansion joint leakage water treatment device is used for aqueduct expansion joint leakage water treatment.

Description

Technical Field

[0001] The utility model relates to a water leakage treatment structure for an aqueduct expansion joint, belonging to the technical field of expansion joint treatment. Background Art

[0002] Aqueduct expansion joint design is an important part of water conservancy project design, affecting the safety and durability of the project. Water leakage caused by damaged expansion joints and aging of water stops is a very common problem.

[0003] In the prior art, water leakage treatment of aqueduct expansion joints generally adopts the sticking water stop strip method, steel plate pressed rubber water stop method, slotted water stop strip method, folded steel plate strip water stop method, etc. Among them, the steel plate pressed rubber water stop method has a better water stop effect and is widely used in actual projects. Its treatment method is to chisel the concrete on the water side to form a groove with a depth of about 5 cm, embed a steel plate and a U-shaped rubber plate at the bottom of the groove, fill the two sides of the expansion joint in the groove with cement mortar, and fill the expansion joint with polysulfide sealant or polyurethane sealant.

[0004] The traditional method of treating water leakage in expansion joints only focuses on treating the joint itself. After being washed by flowing water and undergoing periodic structural changes, the water-stopping materials embedded in the joints are easily eroded and fall off, forming new and larger leaks. In addition, traditional anti-seepage materials have poor temperature resistance, and the construction temperature is not allowed to be below 5°C. In addition, the traditional treatment method is relatively complex, difficult, and has a long construction period, which affects the safe operation of the building and the normal water supply function. Utility Model Content

[0005] The utility model provides a water leakage treatment structure for an aqueduct expansion joint, which can solve the problems of poor repair effect, complex construction, great difficulty and long construction period in traditional expansion joint water leakage treatment methods.

[0006] The utility model provides a structure for treating water leakage at an aqueduct expansion joint, the structure comprising:

[0007] An anti-seepage adhesive layer is arranged on the inner surface of the expansion joint;

[0008] Flexible water-stopping material, embedded in the expansion joint;

[0009] An interface treatment layer is provided on the top of the expansion joint and on the concrete surfaces on both sides thereof;

[0010] The polyurea unit is arranged on the interface treatment layer and is used to isolate external water vapor from entering the interface treatment layer.

[0011] Optionally, the thickness of the polyurea unit is 3 mm to 4 mm.

[0012] Optionally, the polyurea unit comprises:

[0013] A bottom polyurea layer, disposed on the interface treatment layer;

[0014] A tire base fabric layer, arranged on the bottom polyurea layer;

[0015] The top polyurea layer is arranged on the tire base fabric layer.

[0016] Optionally, the top polyurea layer comprises a plurality of polyurea sub-layers stacked together.

[0017] Optionally, a repair edge sealing layer is further provided between the damaged portion on the inner surface of the expansion joint and the anti-seepage adhesive layer.

[0018] Optionally, a chamfered edge sealing surface is provided at the edge of the polyurea unit.

[0019] Optionally, the embedding depth of the flexible waterproof material is 8 cm to 12 cm.

[0020] Optionally, along the width direction of the expansion joint, the width of the interface treatment layer is greater than or equal to 40 cm;

[0021] The size of the polyurea unit matches the size of the interface treatment layer.

[0022] Optionally, along the width direction of the expansion joint, the width of the concrete on both sides of the expansion joint is 25 cm to 30 cm.

[0023] Optionally, the material of the repair edge sealing layer is an elastic edge sealing agent.

[0024] The beneficial effects that the utility model can produce include:

[0025] The aqueduct expansion joint water leakage treatment structure provided by the utility model embeds a flexible water-stopping material in the expansion joint, and arranges an interface treatment layer and a polyurea unit on the concrete surface on the top of the flexible water-stopping material and on both sides thereof. The polyurea has the advantages of fast construction speed and good water-stopping effect, and can be cured and dried within 3 to 5 seconds, which greatly saves time and economic costs, and can quickly and effectively solve the problem of expansion joint water leakage.

[0026] The aqueduct expansion joint leakage treatment structure provided by the utility model adopts a repair edge sealing layer to repair the damaged expansion joint, embeds a flexible water-stopping material in the joint, and then scrapes polyurea by hand to achieve the purpose of anti-leakage. Compared with the prior art, the construction is more convenient, and there is no need to chisel the concrete on both sides of the construction joint to form a groove. Only the surface of the expansion joint is cleaned and then repaired with an elastic edge sealing agent, and polyurea is applied to prevent seepage after the repair is smooth. Since the elastic edge sealing agent has the ability to adapt to deformation in the underwater concrete expansion joint, has good bonding performance to the concrete underwater, and has a certain tensile strength, it will not be sucked out, rolled up, or washed away by the water flow during flood discharge, and can be conveniently poured underwater in the expansion joint gap of about 2 cm.

[0027] The aqueduct expansion joint water leakage treatment structure provided by the utility model is provided with a polyurea unit on the interface treatment layer. Since polyurea has flexible characteristics, it has strong bonding force with the concrete base surface, has strong ability to adapt to base surface deformation, and has good crack resistance and deformation resistance. It also has good impact resistance and corrosion resistance, and the appearance after repair is beautiful and neat. The construction is fast and can be controlled within 30 minutes. The surface drying time is short, less than 1 hour, and the surface layer does not crack or peel. The polyurea coating has a very good waterproof effect, which can ensure that the inner side of the aqueduct is always in a sealed state during the deformation process of the expansion joint. Compared with traditional technologies, the utility model realizes the convenience, speed and durability of the expansion joint treatment, has a very good effect on repairing the leakage of the aqueduct expansion joint, and the scheme is simple, economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of aqueduct expansion joint water leakage treatment structure provided in an embodiment of the utility model.

[0029] Reference numerals:

[0030] 10. Expansion joint; 11. Anti-seepage adhesive layer; 12. Flexible water-stopping material; 13. Interface treatment layer; 14. Bottom polyurea layer; 15. Tire base fabric layer; 16. First polyurea sub-layer; 17. Second polyurea sub-layer; 18. Chamfered edge sealing surface; 19. Concrete; 20. Original water-stop strip. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0032] The utility model provides a structure for treating water leakage in aqueduct expansion joints, such as Figure 1 As shown, the structure includes:

[0033] The anti-seepage adhesive layer 11 is arranged on the inner surface of the expansion joint 10 .

[0034] In practical applications, a repair edge sealing layer may be provided between the damaged portion on the inner surface of the expansion joint 10 and the anti-seepage adhesive layer 11. The material of the repair edge sealing layer is an elastic edge sealing agent.

[0035] Specifically, the surface of the aqueduct expansion joint 10 is cleaned, and the damaged part of the expansion joint 10 is repaired with HK-966 elastic edge sealant to form a repair edge seal layer. After the repair edge seal layer is basically dry, a flexible anti-seepage glue is applied inside the expansion joint 10 to form an anti-seepage glue layer 11.

[0036] The flexible waterproof material 12 is embedded in the expansion joint 10 .

[0037] The flexible waterproof material 12 may be a GB flexible waterproof material.

[0038] GB flexible water-stopping material is embedded above the original water-stopping strip 20 in the expansion joint 10, and the embedding depth of the GB flexible water-stopping material is 8 cm to 12 cm. In practical applications, for example, the embedding depth of the GB flexible water-stopping material can be 8 cm, 10 cm or 12 cm.

[0039] The interface treatment layer 13 is arranged on the top of the expansion joint 10 and on the surface of the concrete 19 on both sides thereof.

[0040] Specifically, the surface of the concrete 19 within 25 cm to 30 cm on both sides of the expansion joint 10 is polished with a wire brush or a grinder to remove loose mortar skin and protruding parts, and remove oil stains, floating soil, mortar skin and debris on the surface of the concrete 19. The surface of the cleaned concrete 19 is wiped clean with wet cotton yarn. The surface of the concrete 19 is required to be flat, dust-free and free of visible water. After drying, the interface agent is applied to form the interface treatment layer 13. In practical applications, the width of the interface treatment layer 13 along the width direction of the expansion joint 10 can be set to be greater than or equal to 40 cm.

[0041] The polyurea unit is disposed on the interface treatment layer 13 and is used to isolate external water vapor from entering the interface treatment layer 13 .

[0042] In practical applications, the thickness of the polyurea unit can be set to 3 mm to 4 mm. The size of the polyurea unit matches the size of the interface treatment layer 13 .

[0043] In an embodiment of the present utility model, the polyurea unit may include:

[0044] A bottom polyurea layer 14 is disposed on the interface treatment layer 13;

[0045] A tire base fabric layer 15 is disposed on the bottom polyurea layer 14;

[0046] The top polyurea layer is disposed on the tire base fabric layer 15 .

[0047] Furthermore, the top polyurea layer may include a plurality of polyurea sub-layers stacked one on top of the other.

[0048] Specifically, the bottom polyurea is scraped on the interface treatment layer 13 to form the bottom polyurea layer 14; in order to disperse the stress on the polyurea coating, the tire base cloth is used for reinforcement treatment, so the tire base cloth layer 15 can be set on the bottom polyurea layer 14, and the tire base cloth is required to be laid flat and compacted, so that the tire base cloth fibers are embedded in the polyurea coating. The tire base cloth is required to be deformed in coordination with the applied polyurea and to have good adhesion with the applied polyurea. Then, a top polyurea layer is set on the tire base cloth layer 15. The top polyurea layer can be formed by applying multiple layers of SK hand-scraped polyurea. For example, the top polyurea layer consists of two layers of polyurea coating, namely the first polyurea sub-layer 16 and the second polyurea sub-layer 17. Then the coating on the interface treatment layer 13 is set according to "bottom polyurea layer 14 + tire base cloth layer 15 + first polyurea sub-layer 16 + second polyurea sub-layer 17", and multiple passes are scraped to a set total thickness of 3mm to 4mm, and the coating thickness is required to be uniform and there is no missing scraping.

[0049] In the embodiment of the utility model, the edge of the polyurea unit is further provided with a chamfered edge sealing surface 18. The material of the chamfered edge sealing surface 18 can be HK-966 elastic edge sealing agent.

[0050] In order to prevent the edge of the polyurea coating from peeling and being washed away by water, after the polyurea coating is completed, HK-966 elastic edge sealer is applied to the edge of the polyurea to form a chamfered edge seal surface 18. The edge seal requires smooth chamfering, dense edge seal, and firm adhesion. After the edge seal is completed, the polyurea surface is cured for 3 days before water is applied.

[0051] The SK hand-scraped polyurea used in the utility model can quickly and effectively solve the water leakage problem of the expansion joint 10. SK hand-scraped polyurea has the advantages of fast construction speed and good water-stopping effect. It can be cured and dried within 3 to 5 seconds, greatly saving time and economic costs; it has sufficient flexibility and wear resistance, and its service life can reach more than 30 years; and it has super strong UV resistance, high elasticity, and elongation at break performance, no cracking, no weathering, safety and environmental protection, convenient construction, good economy, and is a surface water-stopping structure type that can effectively seal the expansion joint 10.

[0052] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A water leakage treatment structure for aqueduct expansion joints, characterized in that: The structure comprises: An anti-seepage adhesive layer is arranged on the inner surface of the expansion joint; Flexible water-stopping material, embedded in the expansion joint; An interface treatment layer is provided on the top of the expansion joint and on the concrete surfaces on both sides thereof; The polyurea unit is arranged on the interface treatment layer and is used to isolate external water vapor from entering the interface treatment layer.

2. The structure according to claim 1, characterized in that: The thickness of the polyurea unit is 3 mm to 4 mm.

3. The structure according to claim 1 or 2, characterized in that: The polyurea unit comprises: A bottom polyurea layer, disposed on the interface treatment layer; A tire base fabric layer, arranged on the bottom polyurea layer; The top polyurea layer is arranged on the tire base fabric layer.

4. The structure according to claim 3, characterized in that The top polyurea layer includes a plurality of polyurea sub-layers arranged in a stacked manner.

5. The structure according to claim 1, characterized in that A repair edge sealing layer is also provided between the damaged part on the inner surface of the expansion joint and the anti-seepage adhesive layer.

6. The structure according to claim 1, characterized in that The edges of the polyurea units are provided with chamfered edge sealing surfaces.

7. The structure according to claim 1, characterized in that The embedding depth of the flexible waterproof material is 8 cm to 12 cm.

8. The structure according to claim 1, characterized in that Along the width direction of the expansion joint, the width of the interface treatment layer is greater than or equal to 40 cm; The size of the polyurea unit matches the size of the interface treatment layer.

9. The structure according to claim 1, characterized in that Along the width direction of the expansion joint, the width of the concrete on both sides of the expansion joint is 25 cm to 30 cm.

10. The structure according to claim 5, characterized in that The material of the repair edge sealing layer is an elastic edge sealing agent.

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