Building waterproof prefabricated part
By creating installation grooves on the outer wall of prefabricated components and installing sealing strips and sealing layers, the problem of gaps in waterproof strips is solved, achieving long-term stability and durability of waterproof components, reducing the risk of leakage, and improving the waterproof performance of buildings.
Patent Information
- Application Number
- CN202520095517.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-15
AI Technical Summary
During long-term use, gaps may form between the waterproofing strip and the prefabricated components in existing building waterproofing systems, leading to a decrease in waterproofing effectiveness, a risk of leakage, and impacting the durability and safety of the components.
An installation groove is made on the outer wall of the precast component, and one end of the waterproof tape is installed in the groove. It is then sealed with a sealing strip. The bottom of the groove is designed to allow water to flow out, and a sealing layer is filled to enhance the sealing performance.
It improves the reliability and durability of waterproof components, reduces the risk of leakage, extends service life, reduces structural damage caused by water seepage, and enhances the waterproof protection capability of buildings.
Smart Images

Figure CN223838262U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated component technology, specifically to a prefabricated waterproof building component. Background Technology
[0002] As we all know, the application of prefabricated building components is becoming increasingly widespread. However, due to factors such as subcontracting, the on-site prefabrication project and the decoration and renovation project are contracted out separately. As a result, the exterior facade lines need to be pasted by a special person during the later decoration and renovation construction, which cannot be integrated with the structure. Insufficient anchoring measures can easily lead to water seepage and detachment, which wastes manpower and resources. Nowadays, many decoration workers step on the exterior facade lines when working on outdoor walls, such as when installing air conditioner outdoor units. Since the exterior facade lines are not integrated with the structure, they are prone to detachment and pose safety hazards.
[0003] In current applications of waterproofing technology for precast components, although waterproofing strips are laid on the outer walls of the components, this method has significant shortcomings. Initially, such as... Figure 1 and Figure 2 As shown, one end of the waterproof strip is parallel to the erected precast component, which can provide a certain degree of waterproofing. However, over time and due to various factors during use, such as thermal expansion and contraction, component displacement, and long-term natural erosion, gaps can easily form between the waterproof strip and the precast component, creating what industry professionals call a "top-facing gap." The appearance of such gaps allows external moisture to easily seep in.
[0004] A search revealed a prefabricated waterproof building component with publication number CN221895981U, which features exterior facade lines on its outer wall, such as... Figure 3 and Figure 4 As shown, even when the waterproofing strip is laid with its connecting end pressed against the facade trim and the facade trim is used to cover the end of the waterproofing strip to achieve a waterproofing effect, gaps can easily form between the waterproofing strip and the precast components due to various factors during use, such as thermal expansion and contraction, component displacement, and long-term natural erosion. Gaps can also form between the waterproofing strip and the facade trim, and water left along the facade trim can easily flow into the gaps in the waterproofing strip.
[0005] This significantly reduces the waterproofing effectiveness of the waterproofing strip, greatly increasing the risk of failure of the entire waterproofing system of the precast component. This not only seriously threatens the durability of the precast component itself, shortening its service life, but may also damage surrounding building structures and internal facilities due to leakage, causing a series of secondary problems such as dampness, mold, and structural corrosion. This increases maintenance costs and difficulty, fails to meet long-term stable waterproofing requirements, and seriously affects the reliability and safety of precast components in practical applications. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this utility model provides a prefabricated waterproof building component that ensures the prefabricated component maintains good waterproof performance during long-term use, reduces the risk of leakage, and provides a more stable waterproof protection barrier for the building structure.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated waterproof building component, comprising a prefabricated component, on which a waterproof strip is laid. The prefabricated component has an installation groove for installing one end of the waterproof strip. A sealing strip for sealing the installation groove is installed in the installation groove. In use, one end of the waterproof strip is installed in the installation groove, and the sealing strip is installed in the installation groove to seal one end of the waterproof strip, thereby improving the waterproof effect.
[0010] Furthermore, the bottom of the mounting groove is inclined, and the inner side is higher than the outer side.
[0011] Furthermore, an exterior facade line is provided on the outer wall of the prefabricated component and at the top of the mounting groove.
[0012] Furthermore, the top of the facade lines is inclined, and the side closer to the precast component is higher than the side farther away from the precast component.
[0013] Furthermore, after the sealing strip is installed, a sealing layer is filled into the installation groove.
[0014] Furthermore, the sealing layer is a sealant or a sealant grease.
[0015] Furthermore, the precast component is provided with reinforcing steel bars to enhance the overall strength of the precast component.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides a prefabricated waterproof building component with the following characteristics:
[0018] Beneficial effects:
[0019] This prefabricated waterproof building component employs a method of creating installation grooves in the prefabricated component and inserting one end of the waterproof strip into the groove, then sealing it with a sealing strip. This approach offers several significant advantages. First, in terms of waterproofing effectiveness, it greatly enhances the reliability and durability of waterproofing. Compared to traditional methods, it effectively avoids the problem of waterproofing failure due to gaps over time, ensuring that the prefabricated component maintains good waterproofing performance throughout long-term use. This reduces the risk of leakage, provides a more stable waterproof protection barrier for the building structure, and reduces a series of problems such as dampness, mold, and structural damage that may be caused by water penetration, thus extending the building's service life and maintenance cycle. Second, in terms of stability, the waterproof strip installed within the installation groove significantly enhances its stability. This not only helps to keep the waterproof strip in place under various environmental conditions and reduce damage to the waterproof structure caused by displacement, shaking and other factors, but also ensures that it can maintain a good sealing state when it encounters external impact or vibration, further guaranteeing the stable performance of the waterproof function. It provides solid technical support for the waterproof application of precast components in complex and ever-changing actual working conditions, improves the overall performance and quality of precast components, and has high practical value and economic benefits. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the first three-dimensional structure of the prior art;
[0021] Figure 2 This is a schematic diagram of the first side view structure of the prior art;
[0022] Figure 3 This is a schematic diagram of the second three-dimensional structure of the prior art;
[0023] Figure 4 This is a schematic diagram of the second side view structure of the prior art;
[0024] Figure 5 This is a three-dimensional structural diagram of the present invention;
[0025] Figure 6 This is a side view of the structure of this utility model;
[0026] Figure 7 This is a three-dimensional structural diagram of the present invention without the sealing strip installed;
[0027] Figure 8 This is a side view of the present invention without the sealing strip installed;
[0028] Figure 9 This is a three-dimensional structural diagram of the sealing strip of this utility model;
[0029] Figure 10 This utility model Figure 6The diagram shows a partially enlarged structural schematic at point A.
[0030] In the diagram: 1. Precast components; 2. Exterior facade lines; 3. Waterproof strip; 4. Installation groove; 5. Sealing strip; 6. Sealing layer; 7. Reinforcing steel bars. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] like Figure 5 , Figure 6 and Figure 10 As shown, this utility model discloses a prefabricated waterproof building component, including a prefabricated component 1. The prefabricated component 1 contains reinforcing steel bars 7 to strengthen its overall strength. A waterproof strip 3 is laid on the outer wall of the prefabricated component 1. An installation groove 4 is formed on the prefabricated component 1 for installing the end of the waterproof strip 3. A sealing strip 5 is installed inside the installation groove 4 to seal it. In use, one end of the waterproof strip 3 is installed in the installation groove 4, such as... Figure 9 As shown, the sealing strip 5 is pressed into the mounting groove 4 to seal one end of the waterproof strip 3 to improve the waterproof effect. Then, the mounting groove 4 is filled or injected with the sealing layer 6. The sealing layer 6 is usually made of a good sealing material such as sealant or sealant grease, so that the waterproof strip 3 has good waterproof performance and improves the stability of the waterproof strip 3.
[0033] Furthermore, such as Figure 7 and Figure 8 The bottom of the mounting groove 4 is sloped so that the inner side is higher than the outer side. Even if a small amount of water enters the mounting groove 4, the water will flow out of the mounting groove 4 along the slope. In addition, the slope of the bottom of the mounting groove 4 also facilitates the installation of the waterproof tape 3.
[0034] like Figure 8 As shown, an exterior facade line 2 is provided on the outer wall of the precast component 1 and at the top of the mounting groove 4. The top of the exterior facade line 2 is inclined, and the side closer to the precast component 1 is higher than the side farther away from the precast component 1. The exterior facade line 2 guides the rainwater flowing down from above the precast component 1 and provides rain protection for the mounting groove 4.
[0035] In summary, when using this prefabricated waterproof building component, an installation groove 4 is precisely opened at a specific location of the prefabricated component 1 according to the design requirements. This ensures that the size and shape of the installation groove 4 meet the installation standards of the waterproof strip 3 and the sealing strip 5. The inner surface of the installation groove 4 should be flat, free of debris and sharp protrusions, so as to ensure that the waterproof strip 3 can fit tightly and the sealing strip 5 can be smoothly embedded.
[0036] Carefully place one end of the waterproof tape 3 into the installation groove 4 of the precast component 1, ensuring that it is flat and tightly fitted to the top and wall of the groove. Ensure that the waterproof tape 3 is not twisted, folded, or lifted in the installation groove 4, and that its length and position are accurate so that it can fully perform its waterproof function.
[0037] Pick up the sealing strip 5 and press it steadily and evenly into the mounting groove 4 along the opening direction, ensuring that the sealing strip 5 tightly presses against the waterproof strip 3, completely fixing and sealing one end of the waterproof strip 3 in the mounting groove 4. During the embedding process, pay attention to the integrity of the sealing strip 5 to avoid breakage or partial insufficiency, ensuring that the entire sealing strip 5 forms a tight and continuous seal with the mounting groove 4 and the waterproof strip 3, effectively preventing moisture from seeping in from the connection between the waterproof strip 3 and the precast component 1.
[0038] Then, the sealing layer 6 is filled or injected into the mounting groove 4. The sealing layer 6 is used to fill the groove of the mounting groove 4 and the gap between it and the sealing strip 5 to more effectively ensure waterproofing.
[0039] Through the above steps, the waterproofing strip 3 can be effectively installed and sealed on the precast component 1, giving full play to its waterproofing performance, improving the waterproofing effect and stability of the precast component 1, extending its service life, and ensuring the waterproofing quality of the building structure.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A prefabricated waterproof building component, comprising a prefabricated component (1), wherein a waterproof strip (3) is laid on the outer wall of the prefabricated component (1), characterized in that: The prefabricated component (1) has an installation groove (4) for installing one end of the waterproof strip (3). A sealing strip (5) for sealing the installation groove (4) is installed in the installation groove (4). In use, one end of the waterproof strip (3) is installed in the installation groove (4), and the sealing strip (5) is installed in the installation groove (4) to seal one end of the waterproof strip (3) to improve the waterproof effect.
2. The prefabricated waterproof building component according to claim 1, characterized in that: The bottom of the mounting groove (4) is inclined, and the inner side is higher than the outer side.
3. A prefabricated waterproof building component according to claim 1, characterized in that: The prefabricated component (1) has an exterior facade line (2) on its outer wall and at the top of the mounting groove (4).
4. A prefabricated waterproof building component according to claim 3, characterized in that: The top of the facade line (2) is inclined, and the side closer to the precast component (1) is higher than the side farther away from the precast component (1).
5. A prefabricated waterproof building component according to claim 1, characterized in that: After the sealing strip (5) is installed, the sealing layer (6) is filled into the installation groove (4).
6. A prefabricated waterproof building component according to claim 5, characterized in that: The sealing layer (6) is a sealant or a sealant grease.
7. A prefabricated waterproof building component according to any one of claims 1-6, characterized in that: The precast component (1) is provided with reinforcing steel bars (7) for strengthening the overall strength of the precast component (1).
Citation Information
Patent Citations
Building waterproof prefabricated part
CN221895981U