Outer wall brick-concrete boundary joint leakage repairing structure
By using a combination of micro-expansion polymer grouting mortar and multiple layers of waterproof material at the brick-concrete interface, the problems of crack re-cracking and leakage at the brick-concrete interface were solved, achieving stable waterproofing and structural reinforcement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 科顺建筑修缮技术有限公司
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, cracks in the wall at the brick-concrete interface are prone to re-cracking after repair, leading to the formation of leakage channels. Existing repair methods cannot effectively solve the problem of cracks caused by the unstable connection and the difference in thermal expansion coefficient at the brick-concrete interface.
Micro-expansion polymer mortar is used to fill the joints between brick and concrete, and water-breaking grooves and multiple layers of waterproof material are set on the concrete and brick wall structures to form a tightly bonded waterproof system, which alleviates thermal expansion differences and external force deformation and enhances structural stability.
It effectively prevents the re-cracking of cracks in the wall at the brick-concrete junction, improves the waterproof performance and structural reliability of the wall at the brick-concrete junction, and ensures that there is no leakage for a long time.
Smart Images
Figure CN224134286U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building waterproofing technology, and in particular to a repair structure for leakage at the joint between brick and concrete exterior walls. Background Technology
[0002] In reinforced concrete structures, the conventional practice for constructing infill walls is to install reinforcing bars in the reinforced concrete structure before constructing the infill wall, resulting in direct rigid contact between the two. This connection method suffers from poor overall integrity and low tensile strength of the block wall. Furthermore, due to the different thermal expansion coefficients of the block wall and the reinforced concrete, the deformation of the two cannot be coordinated, making them highly susceptible to cracking under the influence of environmental and temperature changes.
[0003] In the relevant technical field, the existing repair method is to remove the exterior wall decoration layer and reapply polymer cement waterproof mortar. However, this cannot fill the joint between brick and concrete tightly, and cracks will still appear later, forming leakage channels. Utility Model Content
[0004] This utility model provides a repair structure for leaks at the joint between brick and concrete walls, which solves the problem that cracks at the joint between brick and concrete walls are prone to re-cracking after repair in the prior art. It effectively prevents cracks at the joint between brick and concrete walls from re-cracking after repair and improves the reliability of repairing cracks at the joint between brick and concrete walls.
[0005] This utility model provides a repair structure for leaks at the joints of brick and concrete exterior walls, including:
[0006] Concrete structure;
[0007] A brick wall structure is provided on one side of the concrete structure, and the brick wall structure and the concrete structure are spaced apart to form a brick-concrete joint;
[0008] A micro-expansion polymer joint filler mortar layer is provided, which fills the brick-concrete joint and is tightly bonded to the concrete structure and the brick wall structure.
[0009] According to the present invention, a structure for repairing leakage at the interface between brick and concrete walls is provided, wherein a first water-cutting groove is provided on the concrete structure, and a second water-cutting groove is provided on the same side of the brick wall structure and the concrete. Multiple layers of waterproof material are applied to the sidewalls of the concrete structure and the brick wall structure between the first water-cutting groove and the second water-cutting groove.
[0010] According to the present invention, a structure for repairing leakage at the joint between brick and concrete in an exterior wall is provided. The plurality of waterproof material layers include a polymer cement waterproof mortar layer. The polymer cement waterproof mortar layer is set in close contact with the concrete structure and the side wall of the concrete structure. The polymer cement waterproof mortar layer is used to level the base surface between the first water-cutting groove and the second water-cutting groove.
[0011] According to the present invention, a repair structure for leakage at the joint between brick and concrete walls is provided, wherein the polymer cement waterproof mortar layer is embedded with galvanized steel wire mesh.
[0012] According to the present invention, a structure for repairing leakage at the joint between brick and concrete walls is provided, wherein the plurality of waterproof material layers further include a polymer cement waterproof coating layer, which is disposed on the outside of the polymer cement waterproof mortar layer.
[0013] According to the present invention, a repair structure for leakage at the joint between brick and concrete walls is provided, wherein the coating end of the polymer cement waterproof coating layer near the two ends of the first and second water-blocking channels is respectively embedded in the first and second water-blocking channels.
[0014] According to the present invention, a repair structure for leakage at the joint between brick and concrete in an exterior wall is provided. The repair structure for leakage at the joint between brick and concrete in an exterior wall further includes a finishing layer, which is disposed on the side of the polymer cement waterproof coating layer away from the polymer cement waterproof mortar layer.
[0015] According to the present invention, a repair structure for leakage at the joint between brick and concrete in an exterior wall is provided, wherein the width of the joint between the brick and concrete is in the range of 30mm to 40mm.
[0016] According to the present invention, the cross-section of the first water-cutting groove is 40mm×20mm; and / or the cross-section of the second water-cutting groove is 40mm×20mm.
[0017] According to the present invention, a structure for repairing leakage at the joint between brick and concrete in an exterior wall is provided, wherein the distance between the first water-cutting groove and the joint between the brick and concrete is greater than 300mm; and / or, the distance between the second water-cutting groove and the joint between the brick and concrete is greater than 300mm.
[0018] This utility model provides a repair structure for leaking joints at the junction of brick and concrete walls. It involves filling the joint with micro-expansion polymer mortar, ensuring a tight bond between the mortar and both the concrete and brick structures. The micro-expansion properties of the polymer mortar compensate for volume shrinkage during the hardening process, reducing crack formation caused by shrinkage. Simultaneously, its excellent adhesion ensures a strong bond between the mortar and the concrete and brick walls on both sides, enhancing the overall structural stability. Furthermore, the polymer mortar can adapt to differences in thermal expansion between different materials, effectively mitigating stress caused by temperature changes and preventing the recurrence of cracks. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure for repairing leakage at the joint between brick and concrete walls provided by this utility model.
[0021] Figure label:
[0022] 10. Repair of structural defects caused by leakage at the joints between brick and concrete walls;
[0023] 100. Concrete structure; 110. First water-cutting channel;
[0024] 200. Brick wall structure; 210. Second water-cutting channel;
[0025] 300. Brick-concrete joint;
[0026] 400. Micro-expansion polymer joint filler mortar layer;
[0027] 500. Polymer cement waterproof mortar layer;
[0028] 600. Polymer cement waterproof coating layer;
[0029] 700, Finishing layer. Detailed Implementation
[0030] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0031] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.
[0033] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0035] The following is combined Figure 1The present invention provides a detailed description of a wall brick-concrete joint leakage repair structure through specific embodiments and application scenarios.
[0036] In the embodiments of this utility model, such as Figure 1 As shown, a repair structure 10 for leaking joints at the interface of brick and concrete walls includes a concrete structure 100, a brick wall structure 200, and a micro-expansion polymer mortar layer 400. The brick wall structure 200 is located on one side of the concrete structure 100, and a brick-concrete joint 300 is formed between the brick wall structure 200 and the concrete structure 100 at intervals. The micro-expansion polymer mortar layer 400 fills the brick-concrete joint 300 and is tightly abutted against the concrete structure 100 and the brick wall structure 200.
[0037] The concrete structure 100 serves as the main load-bearing structure of the building, providing support for the brick wall structure 200. The brick wall structure 200 is typically constructed of cast concrete. In this embodiment of the invention, it forms one side boundary of the brick-concrete joint 300.
[0038] The brick wall structure 200 serves as the enclosure or partition structure of the building, and together with the concrete structure 100, it forms the exterior wall of the building. In this embodiment of the invention, it is the other boundary of the brick-concrete joint 300.
[0039] Brick wall structures 200 are usually constructed of blocks, and their integrity and tensile strength are relatively low. Moreover, their coefficient of thermal expansion is different from that of concrete structures 100, making them prone to deformation under temperature changes and external forces.
[0040] The brick-concrete joint 300 is the gap between the concrete structure 100 and the brick wall structure 200. Due to the different material properties of concrete and brick wall, the brick-concrete joint 300 is prone to cracking under the influence of factors such as temperature changes, external forces or foundation settlement, leading to water leakage problems.
[0041] The 400mm micro-expansion polymer mortar layer fills the brick-concrete joint with a 300mm layer, serving to seal, waterproof, and reinforce the joint.
[0042] Micro-expansion polymer mortar can compensate for volume shrinkage during the hardening process, reducing internal stress caused by shrinkage and lowering the risk of crack formation. It bonds tightly to concrete and brick walls, enhancing the overall structural stability and resisting external forces and substrate deformation. Micro-expansion polymer mortar can adapt to differences in thermal expansion between different materials, alleviating stress caused by temperature changes and preventing the recurrence of cracks. It also has excellent waterproofing properties, effectively preventing moisture penetration.
[0043] The micro-expansion polymer mortar layer 400 is filled into the brick-concrete joint 300, ensuring that the mortar material is located where treatment is needed, i.e., the brick-concrete joint 300, thereby fulfilling its functions of sealing, waterproofing, and reinforcement. The micro-expansion polymer mortar can be applied to the brick-concrete joint 300 through a specific construction process, filling the entire gap and eliminating pathways for moisture penetration.
[0044] The micro-expansion polymer joint filler mortar layer 400 is installed in close contact with the concrete structure 100 and the brick wall structure 200, ensuring tight contact between the joint filler material and the substrate, eliminating gaps and cavities, and guaranteeing sealing effect and bonding strength. The construction process can ensure that the micro-expansion polymer joint filler mortar layer 400 is in close contact with the concrete structure 100 and the brick wall structure 200, forming a continuous and complete sealing layer, preventing moisture penetration, enhancing the adhesion between the joint filler material and the substrate, and improving the overall structural stability.
[0045] It should be noted that the micro-expansion polymer grouting mortar 400 is a mortar made of high-quality cement as inorganic binder, refined sand as aggregate, and various functional additives (such as polymers, expansion agents, etc.).
[0046] Specifically, the micro-expansion polymer grout 400 can reduce the risk of cracking (e.g., shrinkage rate ≤0.3%) by adding functional additives, which cause the mortar to expand moderately during the hardening process, compensating for shrinkage deformation. The polymer component significantly improves the bonding strength (e.g., tensile bond strength ≥0.2MPa) and flexibility, ensuring a strong bond with the substrate (e.g., door and window frames and walls).
[0047] This application involves filling the brick-concrete joint 300 with micro-expansion polymer mortar, ensuring a tight bond between the mortar and the concrete structure 100 and the brick wall structure 200. The micro-expansion properties of the polymer mortar compensate for volume shrinkage during the material hardening process, reducing crack formation caused by shrinkage. Simultaneously, the excellent bonding properties of the polymer mortar ensure a tight bond between the mortar and the concrete and brick walls on both sides, enhancing the overall structural stability. Furthermore, the polymer mortar can adapt to differences in thermal expansion between different materials, effectively alleviating stress caused by temperature changes and preventing the recurrence of cracks.
[0048] Reference Figure 1 According to the present invention, a wall brick-concrete joint leakage repair structure 10 is provided, wherein a first water-cutting groove 110 is provided on the concrete structure 100, and a second water-cutting groove 210 is provided on the same side of the brick wall structure 200 and the concrete. Multiple layers of waterproof material are applied to the side wall between the first water-cutting groove 110 and the second water-cutting groove 210 of the concrete structure 100 and the brick wall structure 200.
[0049] Understandably, the first water-blocking groove 110 is created on the concrete structure 100 to block the path of water seepage from the concrete structure 100 to the brick wall structure 200, playing a crucial role in waterproofing and water cutoff. Creating a water-blocking groove on the concrete structure 100 can effectively cut off the seepage route of water and prevent water from seeping into the brick-concrete joint 300 through the concrete structure 100.
[0050] The second water-blocking groove 210 is located on the same side of the brick wall structure 200 and the concrete, and together with the first water-blocking groove 110, forms a complete waterproof and flow-blocking system, ensuring that water cannot seep into the brick-concrete joint 300 from either side. The second water-blocking groove 210, corresponding to the water-blocking groove on the concrete structure 100, on the brick wall structure 200 ensures that water is effectively blocked on both sides. This creates a closed waterproof zone at the brick-concrete joint 300, greatly improving the reliability of the waterproofing.
[0051] Multiple layers of waterproof material are applied to the sidewalls of the concrete structure 100 and the brick wall structure 200 between the first water-blocking channel 110 and the second water-blocking channel 210 to provide multiple waterproof barriers, enhance the waterproofing effect, and ensure that the brick-concrete joint 300 does not leak for a long time.
[0052] Multiple layers of waterproof material are applied to the sidewall between the first water-blocking groove 110 and the second water-blocking groove 210, forming multiple waterproof barriers, increasing the number of waterproof layers and improving the reliability of waterproofing. At the same time, multiple layers of waterproof material can also extend the service life of the waterproof layer, ensuring long-term leak-proof performance.
[0053] Reference Figure 1 According to the present invention, a wall brick-concrete joint leakage repair structure 10 is provided, which includes multiple waterproof material layers including a polymer cement waterproof mortar layer 500. The polymer cement waterproof mortar layer 500 is set in close contact with the concrete structure 100 and the side wall of the concrete structure 100. The polymer cement waterproof mortar layer 500 is used to level the base surface between the first water-cutting groove 110 and the second water-cutting groove 210.
[0054] Understandably, polymer cement waterproof mortar layer 500 is a composite material that combines the strength of cement with the flexibility and adhesion of polymers. Using this material in multiple waterproofing layers ensures good integrity, durability, and impermeability of the waterproofing layer.
[0055] A tight seal between the waterproof layer and the substrate is crucial for ensuring effective waterproofing. This close fit prevents moisture from seeping between the waterproof layer and the substrate, thus improving the reliability of the waterproofing.
[0056] The polymer cement waterproof mortar layer 500 is used to level the base surface between the first water-cutting groove 110 and the second water-cutting groove 210, providing a flat base surface for subsequent waterproof layer construction and ensuring the uniformity and continuity of the waterproof layer.
[0057] Leveling is a crucial step in waterproofing construction. Leveling the substrate using a 500 layer of polymer cement waterproof mortar eliminates unevenness, creating favorable conditions for subsequent waterproofing layer application. Simultaneously, the leveling layer can fill tiny cracks and pores in the substrate, further enhancing the waterproofing effect.
[0058] In some embodiments, the polymer cement waterproof mortar layer 500 is embedded with galvanized steel wire mesh.
[0059] Understandably, galvanized steel wire mesh can significantly improve the tensile strength and overall rigidity of polymer cement waterproof mortar layer 500, making the layer more resistant to the effects of external stresses, such as tensile stress caused by temperature changes and building settlement. This helps reduce or prevent crack formation due to substrate shrinkage or other reasons, thereby improving the durability and reliability of the repair layer.
[0060] Reference Figure 1 According to the present invention, a wall brick-concrete joint leakage repair structure 10 is provided, and the multiple waterproof material layers also include a polymer cement waterproof coating layer 600, which is disposed on the outside of the polymer cement waterproof mortar layer 500.
[0061] Understandably, polymer cement waterproof coatings have excellent waterproof performance and can effectively prevent moisture from penetrating the wall and entering the internal structure. By applying another layer of polymer cement waterproof coating on top of the polymer cement waterproof mortar layer, a more comprehensive and multi-layered waterproof system is formed, further enhancing the overall waterproof capability and durability of the structure.
[0062] Reference Figure 1 According to the present invention, a wall brick-concrete joint leakage repair structure 10 is provided, wherein the coating end of the polymer cement waterproof coating layer 600 near the two ends of the first water-blocking groove 110 and the second water-blocking groove 210 is respectively embedded in the first water-blocking groove 110 and the second water-blocking groove 210.
[0063] Understandably, this embodiment embeds the coating termination of the polymer cement waterproof coating layer 600 into the first water-blocking groove 110 and the second water-blocking groove 210, ensuring that the waterproof coating layer forms a complete seal at the water-blocking groove. This effectively prevents moisture from seeping into the brick-concrete joint 300 area along the wall surface or through tiny gaps. The embedded design ensures a seamless connection between the waterproof coating layer and the water-blocking groove, further enhancing the waterproofing effect.
[0064] Reference Figure 1 According to the present invention, an exterior wall brick-concrete joint leakage repair structure 10 is provided. The exterior wall brick-concrete joint leakage repair structure 10 also includes a finishing layer 700, which is disposed on the side of the polymer cement waterproof coating layer 600 away from the polymer cement waterproof mortar layer 500.
[0065] It is understood that by providing a finishing layer 700 on the polymer cement waterproof coating layer 600, this embodiment can enhance the integrity and durability of the waterproof system, while also providing aesthetics and protection.
[0066] In some embodiments, the width of the brick-concrete joint 300 ranges from 30mm to 40mm.
[0067] Understandably, this embodiment sets the width of the brick-concrete joint 300 to a range of 30mm to 40mm. This provides sufficient space for construction workers to operate, such as cleaning loose materials and filling with micro-expansion polymer mortar, making construction more convenient and efficient. At the same time, the appropriate width helps ensure that the filling material is evenly distributed and fully compacted, thereby improving the repair quality.
[0068] In some embodiments, the first water-cutting tank 110 has a cross-section of 40mm × 20mm; and / or, the second water-cutting tank 210 has a cross-section of 40mm × 20mm.
[0069] It is understandable that the width of the first water-blocking groove 110 and the second water-blocking groove 210 are 40mm and the depth is 20mm. This ensures that there is sufficient space for the water-blocking grooves to embed the waterproof layer, forming an effective waterproof barrier. By ensuring the dimensions of the water-blocking grooves, it is possible to effectively prevent water from seeping into the wall through the brick-concrete joint 300, significantly improving the reliability of the waterproofing effect.
[0070] In some embodiments, the distance between the first water-cutting channel 110 and the brick-concrete joint 300 is greater than 300mm; and / or, the distance between the second water-cutting channel 210 and the brick-concrete joint 300 is greater than 300mm.
[0071] It is understood that the distance between the first water-cutting groove 110 and the second water-cutting groove 210 and the brick-concrete joint 300 is greater than 300mm, providing sufficient space for the construction of the waterproof layer and ensuring that the waterproof layer can fully cover the brick-concrete joint 300. By ensuring sufficient spacing, the waterproof layer can effectively prevent water from seeping into the wall through the brick-concrete joint 300, significantly improving the reliability of the waterproofing effect. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A repair structure for leaking joints at the junction of brick and concrete exterior walls, characterized in that, include: Concrete structure; A brick wall structure is provided on one side of the concrete structure, and the brick wall structure and the concrete structure are spaced apart to form a brick-concrete joint; A micro-expansion polymer joint filler mortar layer is provided, which fills the brick-concrete joint and is tightly bonded to the concrete structure and the brick wall structure.
2. The masonry-outer wall joint leakage repairing structure according to claim 1, wherein A first water-cutting groove is provided on the concrete structure, and a second water-cutting groove is provided on the same side of the brick wall structure as the concrete structure. Multiple layers of waterproof material are applied to the sidewalls of the concrete structure and the brick wall structure between the first water-cutting groove and the second water-cutting groove.
3. The masonry-outer wall joint leakage repairing structure according to claim 2, wherein The plurality of waterproof material layers include a polymer cement waterproof mortar layer, which is disposed in close contact with the concrete structure and the sidewall of the concrete structure, and is used to level the base surface between the first water-cut-off channel and the second water-cut-off channel.
4. The masonry-outer wall joint leakage repairing structure according to claim 3, wherein The polymer cement waterproof mortar layer is embedded with galvanized steel wire mesh.
5. The masonry-outer wall joint leakage repairing structure according to claim 3, wherein The plurality of waterproof material layers also include a polymer cement waterproof coating layer, which is disposed on the outside of the polymer cement waterproof mortar layer.
6. The masonry-outer wall joint leakage repairing structure according to claim 5, wherein The coating ends of the polymer cement waterproof coating layer near the two ends of the first and second water-cutting channels are respectively embedded in the first and second water-cutting channels.
7. The masonry-outer wall joint leakage repairing structure according to claim 5, wherein The structure for repairing leakage at the joint between brick and concrete walls also includes a finishing layer, which is located on the side of the polymer cement waterproof coating layer away from the polymer cement waterproof mortar layer.
8. The masonry-outer wall joint leakage repairing structure according to any one of claims 1 to 7, characterized in that, The width of the brick-concrete joint ranges from 30mm to 40mm.
9. The masonry-outer wall joint leakage repairing structure according to any one of claims 2 to 7, characterized in that, The cross-section of the first water-cutting trough is 40mm × 20mm; And / or, the cross-section of the second water cut-off trough is 40mm × 20mm.
10. The masonry-outer wall joint leakage repairing structure according to any one of claims 2 to 7, characterized in that, The distance between the first water-cutting trough and the brick-concrete joint is greater than 300mm; And / or, the distance between the second water-cutting trough and the brick-concrete joint is greater than 300mm.