Anti-seepage repairing structure for building deformation joint
By employing a multi-layered structural method for repairing building expansion joints to prevent leakage, utilizing an elastic buffer layer, a waterproof sealing layer, and a metal cover layer, the problems of aging sealing materials and tearing of waterproof membranes in existing technologies are solved, achieving efficient waterproofing and structural stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HONGDA CONSTR GRP CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-17
AI Technical Summary
Existing methods for preventing leakage in expansion joints are ineffective. Sealing materials are prone to aging and cracking, and waterproof membranes are difficult to adapt to building deformation, leading to water penetration.
It adopts a multi-layer structure, including an elastic buffer layer, a waterproof sealing layer, and a protective surface layer. It uses a high-elasticity rubber layer, a self-adhesive butyl rubber waterproof tape, and a polyurethane waterproof coating layer, combined with a metal cover plate layer, to enhance waterproofing and structural stability.
It effectively prevents water penetration, improves leak prevention, buffers building deformation stress, and enhances structural stability and durability.
Smart Images
Figure CN224134282U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, specifically to a leak-proof repair structure for building expansion joints. Background Technology
[0002] In building construction, expansion joints are structural joints designed to prevent cracks or damage to buildings caused by external factors such as temperature changes, uneven foundation settlement, and earthquakes. However, over time, leakage problems can easily occur at expansion joints, which not only affect the normal use of the building but may also threaten its structural safety.
[0003] Existing methods for repairing leaks in building expansion joints typically involve simply filling them with sealant or laying waterproof membranes. However, these methods are often ineffective. On the one hand, sealant is prone to aging and cracking, leading to waterproofing failure. On the other hand, waterproof membranes are difficult to adapt to the deformation of buildings at expansion joints, and are prone to tearing and detachment, thus failing to effectively prevent water penetration. Therefore, we propose a leak-proof repair structure for building expansion joints. Utility Model Content
[0004] In view of the problems existing in the current building expansion joint waterproofing and repair structure, this utility model is proposed.
[0005] Therefore, the purpose of this utility model is to provide a leak-proof repair structure for building expansion joints, which solves the problem that existing leak-proof repair methods for expansion joints usually involve simply filling with sealant or laying waterproof membranes. However, these methods are often ineffective. On the one hand, sealant is prone to aging and cracking, leading to waterproofing failure. On the other hand, waterproof membranes are difficult to adapt to the deformation of the building at the expansion joint, and are prone to tearing and detachment, thus failing to effectively prevent water penetration.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A leakage prevention and repair structure for building expansion joints includes a base wall and an expansion joint. The expansion joint is provided between the base walls. The expansion joint contains an elastic buffer layer, a waterproof sealing layer, and a protective surface layer. The waterproof sealing layer is placed on top of the elastic buffer layer, and the protective surface layer is placed on top of the waterproof sealing layer. The elastic buffer layer is a highly elastic rubber layer with a thickness of 30-50mm. The waterproof sealing layer includes a self-adhesive butyl rubber waterproof tape and a polyurethane waterproof coating layer. The polyurethane waterproof coating layer is placed on top of the self-adhesive butyl rubber waterproof tape.
[0008] Preferably, the protective surface layer is a metal cover plate layer, and multiple expansion screws are provided on both sides of the waterproof surface layer. The multiple expansion screws are respectively fixed to the two sides of the base wall, and the middle part of the protective surface layer has an arc-shaped structure.
[0009] Preferably, an interface treatment layer is provided between the bottom of the elastic buffer layer and the base wall, and the interface treatment layer is an interface agent layer.
[0010] Preferably, the surface of the elastic buffer layer is provided with multiple anti-slip textures.
[0011] Preferably, the surface of the protective layer is provided with an anti-corrosion layer.
[0012] Preferably, sealing strips are provided between the two sides of the protective surface layer and the top of the base wall.
[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0014] 1. This utility model, by setting up an elastic buffer layer, a waterproof sealing layer, and a protective surface layer, forms a multi-layered anti-seepage structure, which can effectively prevent water penetration and improve the anti-seepage effect of expansion joints. At the same time, the elastic buffer layer is made of highly elastic rubber material, which can buffer the stress generated during building deformation and protect the waterproof sealing layer from damage. The self-adhesive butyl rubber waterproof tape and polyurethane waterproof coating layer of the waterproof sealing layer work together to enhance the waterproof ability. The metal cover plate of the protective surface layer can not only protect the waterproof sealing layer, but also adapt to the deformation of the expansion joint, improving the stability of the structure.
[0015] 2. This utility model enhances the adhesion between the elastic buffer layer and the base wall by setting an interface treatment layer, increases the friction between the elastic buffer layer and the waterproof sealing layer by setting anti-slip texture, and improves the corrosion resistance of the metal cover plate by setting anti-corrosion coating. These design details further improve the reliability and durability of this repair structure. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.
[0019] Explanation of reference numerals in the attached figures:
[0020] 1. Base wall; 2. Expansion joint; 3. Elastic buffer layer; 4. Waterproof sealing layer; 5. Protective surface layer; 6. Self-adhesive butyl rubber waterproof tape; 7. Polyurethane waterproof coating layer; 8. Expansion screw; 9. Interface treatment layer; 10. Anti-slip texture; 11. Anti-corrosion layer; 12. Sealing strip. Detailed Implementation
[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0022] This utility model discloses a leak-proof repair structure for building expansion joints.
[0023] This utility model provides, for example Figure 1-2 The diagram illustrates a building expansion joint waterproofing and repair structure, comprising a base wall 1 and an expansion joint 2. The expansion joint 2 is provided between the base walls 1. Inside the expansion joint 2, there is an elastic buffer layer 3, a waterproof sealing layer 4, and a protective surface layer 5. The waterproof sealing layer 4 is positioned on top of the elastic buffer layer 3, and the protective surface layer 5 is positioned on top of the waterproof sealing layer 4. The elastic buffer layer 3 is a highly elastic rubber layer with a thickness of 30-50mm. The waterproof sealing layer 4 includes a self-adhesive butyl rubber waterproof tape 6 and a polyurethane waterproof coating layer 7. The polyurethane waterproof coating layer 7 is positioned on top of the self-adhesive butyl rubber waterproof tape 6, which can effectively buffer the stress generated during building deformation and prevent the waterproof sealing layer 4 from being damaged due to stress concentration.
[0024] This utility model discloses a building expansion joint anti-leakage repair structure. The protective surface layer 5 is a metal cover plate layer. Multiple expansion screws 8 are provided on both sides of the waterproof surface layer. The multiple expansion screws 8 are respectively fixed to the two sides of the base wall 1. The middle part of the protective surface layer 5 has an arc-shaped structure, which can adapt to the deformation of the expansion joint 2.
[0025] This utility model discloses a building expansion joint anti-leakage repair structure. An interface treatment layer 9 is provided between the bottom of the elastic buffer layer 3 and the base wall 1. The interface treatment layer 9 is an interface agent layer, which can enhance the adhesion between the elastic buffer layer 3 and the base wall 1.
[0026] This utility model discloses a building expansion joint anti-leakage repair structure, wherein the surface of the elastic buffer layer 3 is provided with multiple anti-slip textures 10 to prevent relative sliding between the waterproof sealing layer 4 and the elastic buffer layer 3.
[0027] This utility model discloses a building expansion joint anti-leakage repair structure. The surface of the protective layer 5 is provided with an anti-corrosion layer 11, which can improve the corrosion resistance of the protective layer and extend its service life.
[0028] This utility model discloses a building expansion joint anti-leakage repair structure, wherein the protective surface layer 5 is provided with sealing strips 12 between the two sides and the top of the base wall 1.
[0029] When using it, first clean the base wall 1, then apply an interface agent to form an interface treatment layer 9, then install the elastic buffer layer 3, then lay the self-adhesive butyl rubber waterproof tape 6, and apply a polyurethane waterproof coating layer 7 to form a waterproof sealing layer 4. Finally, install the waterproof surface layer and fix it with expansion bolts. Install a sealing strip 12 at the connection between the waterproof surface layer and the base wall 1.
[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A leak-proof repair structure for building expansion joints, comprising a base wall (1) and an expansion joint (2), characterized in that, Expansion joints (2) are provided between the base wall (1). An elastic buffer layer (3), a waterproof sealing layer (4), and a protective surface layer (5) are provided inside the expansion joint (2). The waterproof sealing layer (4) is located on top of the elastic buffer layer (3). The protective surface layer (5) is located on top of the waterproof sealing layer (4). The elastic buffer layer (3) is a highly elastic rubber layer with a thickness of 30-50mm. The waterproof sealing layer (4) includes a self-adhesive butyl rubber waterproof tape (6) and a polyurethane waterproof coating layer (7). The polyurethane waterproof coating layer (7) is located on top of the self-adhesive butyl rubber waterproof tape (6).
2. The architectural deformation joint leak repair structure of claim 1, wherein, The protective surface layer (5) is a metal cover plate layer. Multiple expansion screws (8) are provided on both sides of the protective surface layer. The multiple expansion screws (8) are respectively fixed on both sides of the base wall (1). The middle part of the protective surface layer (5) has an arc-shaped structure.
3. The architectural transition joint leak repair structure of claim 1, wherein, An interface treatment layer (9) is provided between the bottom of the elastic buffer layer (3) and the base wall (1), and the interface treatment layer (9) is an interface agent layer.
4. The architectural transition joint leak repair structure of claim 1, wherein, The surface of the elastic buffer layer (3) is provided with multiple anti-slip textures (10).
5. The architectural transition joint leak repair structure of claim 1, wherein, The surface of the protective layer (5) is provided with an anti-corrosion layer (11).
6. The architectural transition joint leak repair structure of claim 1, wherein, Sealing strips (12) are provided between the two sides of the protective surface layer (5) and the top of the base wall (1).