Waterproof outer wall concrete structure
By using a multi-layered waterproof structure and composite materials to reinforce the exterior concrete, the problem of easy leakage in traditional exterior walls has been solved, achieving efficient waterproofing and structural stability, and extending the service life of the building.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FU JIAN ER JIAN JIAN SHE JI TUAN GONG SI
- Filing Date
- 2025-02-07
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional concrete exterior walls are prone to cracking and leakage, leading to rainwater seepage that affects the building's durability and appearance. Existing waterproofing measures are complex and costly.
The system employs a multi-layered waterproof structure consisting of an isolation layer, a waterproof mortar layer, a waterproof coating layer, and a waterproof and breathable membrane layer. Combined with glass fiber reinforced polypropylene composite material and carbon fiber reinforcement layers, it enhances waterproof performance and structural stability.
It effectively prevents rainwater penetration, extends the service life of walls, reduces cracks, improves waterproof performance, keeps walls dry, reduces the risk of leakage, and improves building quality.
Smart Images

Figure CN224133980U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of wall technology, and in particular relates to a waterproof exterior wall concrete structure. Background Technology
[0002] From an architectural perspective, the building's exterior walls are the components that enclose the building and form the boundary between the interior and exterior. Waterproofing of building exterior walls should prevent rainwater from entering. In modern architecture, exterior walls, as the building's enclosure structure, are directly exposed to the natural environment and are subjected to erosion from rainwater and moisture.
[0003] Traditional concrete exterior wall structures are prone to cracking, leading to rainwater seepage and subsequent dampness and mold growth inside the wall. This not only affects the building's appearance but also reduces the wall's durability and shortens the building's lifespan, failing to meet the demands of today's market. Therefore, we offer a waterproof concrete exterior wall structure to solve the aforementioned problems. Utility Model Content
[0004] The purpose of this utility model is to provide a waterproof exterior wall concrete structure that solves the problems of easy cracking and leakage of exterior walls and the complex and costly construction of waterproofing measures in the prior art by combining the isolation functional board with multi-layer waterproofing.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.
[0006] This utility model relates to a waterproof exterior wall concrete structure, comprising a wall base layer, an isolation layer fixedly connected to the outer surface of the wall base layer, and an outer layer fixedly connected to the outer surface of the isolation layer; the isolation layer includes a substrate layer, a reinforcing layer fixedly connected to the inner surface of the substrate layer, an anti-corrosion layer fixedly connected to the outer surface of the substrate layer, and a protective layer fixedly connected to the outer surface of the anti-corrosion layer. The wall base layer serves to prevent rainwater from penetrating. In modern buildings, the exterior wall, as the building's enclosure structure, is directly exposed to the natural environment and suffers from the erosion of rainwater and moisture. The isolation layer enhances the corrosion resistance, strength, and waterproofing capabilities of the wall base layer, preventing damage during use and extending its service life. The outer layer works in conjunction with the wall base layer and the isolation layer to achieve multi-layer waterproofing, greatly improving the waterproofing performance of the exterior wall and effectively preventing rainwater penetration.
[0007] The present invention is further configured such that the outer layer includes a waterproof mortar layer, a waterproof coating layer, and a waterproof and breathable membrane layer, wherein the waterproof coating layer is coated on the outer surface of the isolation layer, and the waterproof and breathable membrane layer is coated on the outer surface of the waterproof coating layer.
[0008] The present invention is further configured such that the thickness of the waterproof mortar layer is 10-15mm, and it is made of high-strength waterproof mortar, which can fill the tiny pores remaining on the surface of the base concrete wall after the isolation functional board is treated, forming a stable second waterproof barrier.
[0009] The present invention is further configured such that the waterproof and breathable membrane layer is bonded to the outside of the waterproof coating layer by an adhesive, and has a one-way breathable function, allowing moisture inside the wall to dissipate outward, preventing external rainwater from intruding, and avoiding problems such as mold growth caused by moisture accumulation inside the wall.
[0010] The present invention is further configured such that steel bars are evenly distributed in the horizontal and vertical directions inside the wall base, and the surface of the steel bars is coated with a polyurethane anti-corrosion coating. The steel bars can enhance the integrity and tensile strength of the wall, reduce the possibility of wall cracks, ensure the stability of the wall structure from the inside, and indirectly improve the waterproof effect.
[0011] The present invention is further configured such that the substrate layer is made of glass fiber reinforced polypropylene composite material, and the reinforcing layer is made of carbon fiber. Glass fiber reinforced polypropylene composite material has excellent waterproof and moisture-proof performance. Its internal glass fiber structure gives the board good strength and toughness, which can effectively withstand the stress caused by wall deformation and prevent breakage. At the same time, FRPP material has stable chemical properties and strong resistance to alkaline substances seeping from the base concrete wall, which can maintain the barrier function for a long time. Carbon fiber has ultra-high strength and modulus, is lightweight and corrosion resistant. When it is woven into a mesh structure and attached to the surface of the isolation functional board, it can significantly improve the overall strength of the isolation functional board. When the wall undergoes large deformation due to factors such as foundation settlement and temperature changes, the carbon fiber reinforcing layer can work together with the glass fiber reinforced polypropylene material to share the force, disperse the stress, effectively prevent the isolation functional board from cracking or breaking, and further ensure the stability of the waterproof system.
[0012] The present invention is further configured such that the anti-corrosion layer is made of polyamide resin fiber material, and the protective layer is made of nano titanium dioxide protective material. Polyamide resin fiber material has anti-corrosion ability, thereby improving the anti-corrosion ability of the substrate layer. Nano titanium dioxide has super hydrophilicity, and rainwater can quickly spread and slide off after contacting the coating, avoiding water droplets from staying for a long time and causing erosion to the board, further enhancing the waterproof effect.
[0013] The present invention has the following beneficial effects.
[0014] 1. This utility model greatly improves the waterproof performance of the exterior wall by constructing a multi-layered system of isolation layer, waterproof mortar layer, waterproof coating layer and waterproof breathable membrane layer, effectively blocking rainwater penetration. The isolation layer effectively blocks alkaline substances seeping from the wall base layer, protects the waterproof mortar layer, ensures the long-term effectiveness of the waterproof system, and can buffer minor deformations of the wall base layer, avoiding damage to the waterproof mortar layer caused by base layer changes and maintaining the integrity of the waterproof structure.
[0015] 2. This utility model's reinforcing layer enhances the strength of the isolation layer, copes with large deformations of the wall base, ensures the stability of the waterproof system, and the waterproof and breathable membrane layer is both waterproof and breathable, preventing moisture accumulation in the wall base, keeping the interior of the wall base dry, and extending the service life of the wall base. The internal steel bars enhance the integrity of the wall base, making the wall base more solid, reducing the occurrence of cracks, reducing the risk of rainwater leakage from the source, and improving the quality of the building. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0017] Figure 1 This is a three-dimensional diagram of a waterproof exterior concrete structure.
[0018] Figure 2 This is a front view of a waterproof exterior concrete structure.
[0019] Figure 3 This is a schematic diagram of the composition of the isolation layer material in a waterproof exterior concrete structure.
[0020] Figure 4 This is a three-dimensional diagram of the reinforcing steel bars in a waterproof exterior wall concrete structure.
[0021] Figure 5 This is a schematic diagram of the composition of the outer layer material in a waterproof concrete exterior wall structure.
[0022] In the attached diagram: 1. Wall base layer; 2. Isolation layer; 3. Outer layer; 4. Substrate layer; 5. Reinforcing layer; 6. Anti-corrosion layer; 7. Protective layer; 8. Waterproof mortar layer; 9. Waterproof coating layer; 10. Waterproof breathable membrane layer; 11. Reinforcing steel. Detailed Implementation
[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] Example 1
[0025] Please see Figure 1-5This utility model is a waterproof exterior wall concrete structure, including a wall base 1, an isolation layer 2 fixedly connected to the outer surface of the wall base 1, and an outer layer 3 fixedly connected to the outer surface of the isolation layer 2; the isolation layer 2 includes a substrate layer 4, a reinforcing layer 5 fixedly connected to the inner surface of the substrate layer 4, an anti-corrosion layer 6 fixedly connected to the outer surface of the substrate layer 4, and a protective layer 7 fixedly connected to the outer surface of the anti-corrosion layer 6.
[0026] Specifically: The wall base layer 1 prevents rainwater from entering. In modern buildings, the wall base layer 1, as the building envelope, is directly exposed to the natural environment and is subject to the erosion of rainwater and moisture. The isolation layer 2 is used to enhance the corrosion resistance, strength, and waterproofing of the wall base layer 1, prevent damage to the wall base layer 1 during use, and extend the service life of the wall base layer 1. The outer layer 3 is used to work with the wall base layer 1 and the isolation layer 2 to achieve multi-layer waterproofing, which greatly improves the waterproofing performance of the wall base layer 1 and effectively blocks rainwater penetration.
[0027] Example 2
[0028] Please see Figure 1-5 Based on Example 1, the outer layer 3 includes a waterproof mortar layer 8, a waterproof coating layer 9, and a waterproof breathable membrane layer 10. The waterproof coating layer 9 is coated on the outer surface of the isolation layer 2, and the waterproof breathable membrane layer 10 is coated on the outer surface of the waterproof coating layer 9. The waterproof mortar layer 8 has a thickness of 10-15mm and is made of high-strength waterproof mortar. The waterproof coating layer 9 has a thickness of 0.5-1mm and is made of a polymer waterproof coating with good flexibility and weather resistance, which is evenly applied to the waterproof mortar layer 8. The waterproof breathable membrane layer 10 is attached to the outside of the waterproof coating layer 9 with an adhesive and has a one-way breathable function. The wall base layer 1 has steel bars 11 evenly distributed in the horizontal and vertical directions. The surface of the steel bars 11 is coated with a polyurethane anti-corrosion coating. The substrate layer 4 is made of glass fiber reinforced polypropylene composite material. The reinforcing layer 5 is made of carbon fiber. The anti-corrosion layer 6 is made of polyamide resin fiber material. The protective layer 7 is made of nano titanium dioxide protective material.
[0029] Specifically: High-strength waterproof mortar can fill the tiny pores remaining on the surface of the base concrete wall after the isolation layer 2 treatment, forming a stable second waterproof barrier. High-polymer waterproof coating is evenly applied to the waterproof mortar layer 8, further preventing moisture penetration. Even when tiny cracks appear in the base wall 1, the flexibility of the coating ensures its waterproof effect remains unaffected. The waterproof and breathable membrane layer 10 allows moisture inside the base wall 1 to dissipate outwards, preventing external rainwater intrusion and avoiding problems such as mold growth due to moisture accumulation inside the base wall 1. The reinforcing steel 11 enhances the integrity and tensile strength of the base wall 1, reducing the possibility of cracks and ensuring structural stability from within, indirectly improving the waterproof effect. The glass fiber reinforced polypropylene composite material has excellent waterproof and moisture-proof properties; its internal glass fiber structure gives the board good strength and toughness, effectively bearing the load of the base wall 1. The stress caused by deformation prevents breakage. Meanwhile, the chemically stable FRPP material exhibits strong resistance to alkaline substances seeping from the wall substrate 1, maintaining its barrier function for a long time. Carbon fiber possesses extremely high strength and modulus, is lightweight and corrosion-resistant; when woven into a mesh structure and bonded to the surface of the isolation layer 2, it significantly enhances the overall strength of the isolation layer 2. When the wall substrate 1 undergoes significant deformation due to factors such as foundation settlement and temperature changes, the carbon fiber reinforcement layer 5, together with the glass fiber reinforced polypropylene material, shares the stress, dispersing it and effectively preventing cracks or damage to the isolation layer 2, further ensuring the stability of the waterproofing system. The polyamide resin fiber material has anti-corrosion capabilities, thereby improving the corrosion resistance of the substrate layer 4. Nano-titanium dioxide has super-hydrophilic properties; rainwater spreads and slides off quickly upon contact with the coating, preventing water droplets from lingering and eroding the isolation layer 2, further enhancing the waterproofing effect.
[0030] The working principle of this utility model is as follows: First, the steel bars 11 inside the wall base 1 are tied according to the design requirements to ensure that the steel bars 11 are evenly distributed and firmly connected. Then, concrete is poured to form the wall base 1. After the wall base 1 reaches a certain strength, the surface is cleaned to ensure that the wall surface is flat and clean. Next, the isolation layer 2 is tightly attached to the surface of the wall base 1. It can be fixed with adhesive or special fasteners to ensure a tight fit without gaps. Then, a waterproof mortar layer 8 is applied. A special tool is used to evenly apply the high-strength waterproof mortar to the specified thickness to ensure a smooth surface. After the waterproof mortar layer 8 dries, a waterproof coating layer 9 is applied. The coating is mixed according to the product instructions and applied evenly and carefully to ensure that there are no missed areas or drips. Finally, the waterproof and breathable membrane layer 10 is tightly attached to the waterproof coating layer 9 with adhesive. Attention should be paid to tight adhesion to prevent wrinkling and curling.
[0031] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.
Claims
1. A waterproofed exterior wall concrete structure comprising a wall base layer (1), characterized in that: An isolation layer (2) is fixedly connected to the outer surface of the wall base (1), and an outer layer (3) is fixedly connected to the outer surface of the isolation layer (2). The isolation layer (2) includes a substrate layer (4), a reinforcing layer (5) is fixedly connected to the inner surface of the substrate layer (4), an anti-corrosion layer (6) is fixedly connected to the outer surface of the substrate layer (4), and a protective layer (7) is fixedly connected to the outer surface of the anti-corrosion layer (6).
2. A waterproofed exterior wall concrete structure according to claim 1, characterized in that: The outer layer (3) includes a waterproof mortar layer (8), a waterproof coating layer (9), and a waterproof and breathable membrane layer (10). The waterproof coating layer (9) is coated on the outer surface of the isolation layer (2), and the waterproof and breathable membrane layer (10) is coated on the outer surface of the waterproof coating layer (9).
3. A waterproofed exterior wall concrete structure according to claim 2, wherein: The waterproof mortar layer (8) is 10-15mm thick and is made of high-strength waterproof mortar.
4. A waterproofed exterior wall concrete structure according to claim 2, wherein: The waterproof and breathable membrane layer (10) is bonded to the outside of the waterproof coating layer (9) by an adhesive, and it has a one-way breathable function.
5. A waterproofed exterior wall concrete structure according to claim 1, wherein: The wall base (1) has steel bars (11) evenly distributed in the horizontal and vertical directions inside, and the surface of the steel bars (11) is coated with a polyurethane anti-corrosion coating.
6. A waterproofed exterior wall concrete structure according to claim 1, wherein: The substrate layer (4) is made of glass fiber reinforced polypropylene composite material, and the reinforcing layer (5) is made of carbon fiber.
7. A waterproofed exterior wall concrete structure according to claim 1, wherein: The anti-corrosion layer (6) is made of polyamide resin fiber material, and the protective layer (7) is made of nano titanium dioxide protective material.