A structural foundation waterproofing structure
By using a jointed edge-sealing connection and an internal third waterproof layer, the problem of unstable connection between different waterproof membranes is solved, achieving a highly efficient and reliable waterproof effect, suitable for waterproof construction of structural foundations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SCEGC MECHANIZED CONSTR GRP COMPANY
- Filing Date
- 2025-05-15
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional hot-melt welding and self-adhesive processes cannot guarantee a reliable connection between different waterproof membranes, and the membranes are easily contaminated during construction, affecting the waterproofing quality.
By adopting a jointed edge-wrapping connection method, the first and second waterproof layers are wrapped together through the jointed edge-wrapping, which increases the penetration path and sets a third waterproof layer inside the jointed edge-wrapping to ensure a reliable connection between the two waterproof layers of different materials.
It improves the reliability and waterproofing effect of waterproof layer connection, reduces construction difficulty, avoids damage to the waterproof layer caused by hot welding, and is suitable for connecting waterproof layers of different materials.
Smart Images
Figure CN224468443U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof structure technology, specifically to a waterproof structure foundation. Background Technology
[0002] In current structural foundation designs, pre-applied waterproof membranes made of polymer self-adhesive film are frequently used. Under pressure, the polymer self-adhesive film and the cement adhesive in the cast-in-place concrete permeate each other through the anti-adhesive layer via creep, forming an effective interpenetrating bond and strong intermolecular forces. After the concrete has cured, the gaps between the pre-applied waterproof membrane and the main structure are sealed to the maximum extent, eliminating water passage channels.
[0003] Basement exterior walls often use high-polymer self-adhesive waterproof membranes. These membranes have many advantages, such as high strength, corrosion resistance, good thermal stability, and convenient construction. Their adhesion to concrete structural walls ensures a sealed and waterproof seal.
[0004] The two types of waterproof membranes differ significantly in material properties, making it difficult to guarantee waterproofing quality using traditional hot-melt welding, overlapping, or self-adhesive processes. The reasons are as follows:
[0005] Reason 1: The construction of the side wall waterproof membrane can only proceed after the concrete strength reaches 100% of the design strength and the water spray test is completed;
[0006] Reason 2: Based on reason 1, there is a long interval between the construction of the two types of waterproof membranes, and the overlapping edges of the waterproof membranes on the foundation slab are inevitably contaminated, making it difficult to connect them using traditional adhesive methods.
[0007] Reason 3: Different waterproof membranes have significantly different heat resistance properties, making it difficult to achieve the desired effect using hot melt welding technology. Improper operation can easily damage the waterproof membrane. Utility Model Content
[0008] The purpose of this invention is to provide a basic waterproof structure to solve the technical problem of low waterproof quality at the overlap of two different waterproof membranes.
[0009] The solution of this utility model to the above-mentioned technical problems is as follows:
[0010] A waterproof structure for structural foundation includes a first waterproof layer disposed between a plain concrete cushion layer and a reinforced concrete structure, and a second waterproof layer disposed on the outside of the reinforced concrete structure.
[0011] The plain concrete cushion layer is located below the reinforced concrete structure, and the side end of the plain concrete cushion layer extends to the outside of the reinforced concrete structure; the first waterproof layer and the second waterproof layer are connected by a joint edge, and the joint edge is located on the outside of the plain concrete cushion layer and the outside of the reinforced concrete structure.
[0012] Further defined, the first waterproof layer is provided with a first extension section, and the second waterproof layer is provided with a second extension section; one end of the first extension section is connected to the first waterproof layer, and the other end of the first extension section extends to the outside of the reinforced concrete structure; the second extension section is horizontally arranged, one end of the second extension section is connected to the second waterproof layer, and the other end of the second extension section extends above the first extension section; the second extension section is parallel to the first extension section.
[0013] Both the second extension and the first extension extend into the joint edging.
[0014] Furthermore, the first extension segment and the second extension segment are of equal length.
[0015] Further specified, the length of the first extension segment and the length of the second extension segment are both 200mm.
[0016] Furthermore, both the first extension segment and the second extension segment are bonded to the joint edge.
[0017] Furthermore, a third waterproof layer is provided within the joint edging, and the third waterproof layer is disposed between the first extension section and the second extension section.
[0018] Furthermore, a third waterproof layer is provided between the first extension section and the inner wall of the joint edge and / or between the second extension section and the inner wall of the joint edge.
[0019] Further specified, a third waterproof layer is provided inside the joint edging, the third waterproof layer has an E-shaped vertical cross-section, the third waterproof layer is arranged in the same direction as the joint edging, the upper layer of the third waterproof layer is arranged between the second extension section and the inner wall of the joint edging, the middle layer of the third waterproof layer is arranged between the first extension section and the second extension section, and the lower layer of the third waterproof layer is arranged between the first extension section and the inner wall of the joint edging.
[0020] Further defined, the upper layer of the third waterproof layer extends to the outside of the joint edge and contacts the second waterproof layer, the middle layer of the third waterproof layer extends below the second waterproof layer and contacts the side end of the reinforced concrete structure, and the lower layer of the third waterproof layer extends to the outside of the joint edge and contacts the plain concrete pad layer.
[0021] Further specifying, a base treatment agent layer is provided between the second waterproof layer and the reinforced concrete structure, and the base treatment agent layer is located above the first waterproof layer.
[0022] The beneficial effects of this utility model are as follows:
[0023] 1. This utility model reliably connects two waterproof layers of different materials, the first and second waterproof layers, by using a jointed edge-wrapping method. This increases the penetration path and difficulty at the connection point between the first and second waterproof layers, thereby improving the waterproofing effect and meeting actual waterproofing needs.
[0024] 2. This utility model, by setting a third waterproof layer inside the joint edge, increases the difficulty of penetration and improves the waterproof effect; on the other hand, it achieves the bonding between the first and second waterproof layers, ensuring a stable and reliable connection at the joint, avoiding damage to the waterproof layer caused by hot welding, reducing construction difficulty, and further ensuring the waterproof effect; it has a wide range of applications and can meet the waterproof reliability requirements of the connection positions of waterproof layers of different materials. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the waterproof structure of the present invention in use.
[0026] Figure 2 for Figure 1 Enlarged diagram of part A in the middle;
[0027] In the diagram, 10-plain concrete foundation; 20-reinforced concrete structure; 30-first waterproof layer; 31-first extension section; 40-second waterproof layer; 41-second extension section; 50-joint edging; 60-third waterproof layer; 70-base treatment agent layer; 80-construction joint; 81-waterstop steel plate. Detailed Implementation
[0028] 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, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0029] Example 1
[0030] refer to Figure 1 This utility model provides a waterproof structure for a structural foundation, including a first waterproof layer 30 disposed between a plain concrete pad 10 and a reinforced concrete structure 20 and a second waterproof layer 40 disposed on the outside of the reinforced concrete structure 20; it also includes a joint edging 50 connecting the first waterproof layer 30 and the second waterproof layer 40.
[0031] The plain concrete cushion layer 10 is located at the bottom of the reinforced concrete structure 20. The plain concrete cushion layer 10 is set horizontally, while the reinforced concrete structure 20 is set vertically. One end of the plain concrete cushion layer 10 extends horizontally to the outside of the reinforced concrete structure 20.
[0032] There is a construction joint 80 inside the reinforced concrete structure 20. The construction joint 80 extends horizontally. At this time, a water-stop steel plate 81 is installed inside the reinforced concrete structure 20. The water-stop steel plate 81 is installed vertically, and the bottom of the water-stop steel plate 81 passes through the construction joint 80 for waterproofing.
[0033] To achieve waterproofing, a second waterproof layer 40 is further laid on the outer surface of the reinforced concrete structure 20. The second waterproof layer 40 is illustrated using a polymer cross-laminated self-adhesive waterproof membrane as an example. A first waterproof layer 30 is laid between the reinforced concrete structure 20 and the plain concrete cushion layer 10. The first waterproof layer 30 is illustrated using a polymer self-adhesive pre-laid waterproof membrane as an example.
[0034] At this point, the waterproofing of the first waterproof layer 30 and the second waterproof layer 40 is discontinuous at the corner formed by the reinforced concrete structure 20 and the plain concrete pad 10. If traditional hot-melt welding, overlapping or self-adhesive processes are used, it is difficult to guarantee the waterproofing quality. At the same time, since the construction time of the first waterproof layer 30 is earlier than that of the second waterproof layer 40, the first waterproof layer 30 is exposed to the construction site trench for a longer time. The polymer particles on the surface of the first waterproof layer 30 are contaminated by rainwater, mud, grease, etc., and are difficult to clean. Therefore, it is difficult to reliably connect with the second waterproof layer 40 through hot-melt or adhesive methods.
[0035] Therefore, by using a joint edge 50 to connect the first waterproof layer 30 and the second waterproof layer 40, the penetration path and penetration difficulty at the connection point between the first waterproof layer 30 and the second waterproof layer 40 are increased, thereby improving the waterproofing effect and meeting actual waterproofing requirements.
[0036] Taking the polymer cross-laminated self-adhesive waterproof membrane as an example, the joint edge wrapping 50 wraps the joint position of the first waterproof layer 30 and the second waterproof layer 40 to form a U-shaped structure.
[0037] For details, please refer to Figure 2 The end of the first waterproof layer 30 extends to the outside of the reinforced concrete structure 20 to form a first extension section 31. The first extension section 31 and the first waterproof layer 30 are an integral structure to ensure continuous waterproofing. The bottom of the second waterproof layer 40 is folded over and then extends horizontally to form a second extension section 41. The second extension section 41 is located above the first extension section 31 and is preferably parallel to the first extension section 31. The second extension section 41 and the second waterproof layer 40 are an integral structure to avoid leakage.
[0038] At this time, the joint edging 50 is fitted on the outside of the first extension section 31 and the second extension section 41 to connect the first waterproof layer 30 and the second waterproof layer 40 at the joint position. This ensures a reliable connection between the two waterproof layers of different materials, avoids penetration, and guarantees the waterproof effect. At the same time, it avoids unreliable connection due to heat fusion and reduced connection reliability due to contamination with impurities. The structure is simple, the connection is reliable, and the work efficiency is improved. It is suitable for connecting the first extension section 31 and / or the second extension section 41 when they are contaminated with impurities, and meets different usage conditions.
[0039] To further explain, in order to facilitate the connection of the joint edging 50, it is preferable that the first extension 31 and the second extension 41 have equal lengths, both of which are described using 200mm as an example.
[0040] Preferably, the joint edging 50 is connected to the first extension section 31 and the second extension section 41 by adhesive bonding. Specifically, a third waterproof layer 60 is provided inside the joint edging 50, and the first extension section 31 is bonded to the inner wall of the joint edging 50, the first extension section 31 is bonded to the second extension section 41, and the second extension section 41 is bonded to the joint edging 50 by the third waterproof layer 60.
[0041] By extending the seepage path at the joint and reducing the permeability coefficient along the seepage path, the effect of blocking and isolating water is achieved, reducing the possibility of basement leakage after backfilling the trench and saving on later maintenance costs.
[0042] To further explain, the third waterproof layer 60 can be selected as a non-curing rubber asphalt waterproof coating layer. During use, its fluidity is enhanced by heating. Then, the third waterproof layer 60 is filled between the first extension section 31 and the inner wall of the joint edge 50, between the first extension section 31 and the second extension section 41, and between the second extension section 41 and the joint edge 50. After cooling and solidification, a reliable connection can be achieved, increasing the reliability of waterproofing.
[0043] Meanwhile, in order to increase the reliability of the connection between the joint edge 50 and the first extension section 31 and the second extension section 41, a gap is reserved between the inner wall of the joint edge 50 and the end of the first extension section 31 and the end of the second extension section 41. At this time, the vertical cross section of the third waterproof layer 60 filled in the joint edge 50 is an E-shaped structure.
[0044] The upper layer of the third waterproof layer 60 is preferably squeezed out during filling, so that the upper layer of the third waterproof layer 60 overflows between the joint edge 50 and the second waterproof layer 40 to achieve a seal and improve waterproofing; the middle layer of the third waterproof layer 60 is squeezed into close contact with the side wall of the reinforced concrete structure 20; the lower layer of the third waterproof layer 60 is squeezed out to the joint edge 50 and into contact with the plain concrete pad 10, further ensuring waterproofing continuity and improving waterproofing effect.
[0045] To further ensure the waterproofing effect, it is preferable to place a primer 70 between the reinforced concrete structure 20 and the second waterproof layer 40, with the bottom of the primer 70 located above the first waterproof layer 30; correspondingly, the middle layer of the third waterproof layer 60 is tightly connected to the primer 70 by compression.
[0046] To further explain, the first waterproof layer 30 can include two or more waterproof layers as needed, and the second waterproof layer 40 can also include two or more waterproof layers as needed, to meet different waterproofing construction requirements.
[0047] Working principle:
[0048] After the plain concrete cushion layer 10 is completed, the first waterproof layer 30 is laid. According to the construction plan, the first waterproof layer 30 is reserved with a first extension section 31, with a length of not less than 200mm. During construction, it is best to take protective measures such as rigid protective covering.
[0049] After the side wall is ready for waterproofing construction, a base treatment agent is first applied to the outer wall of the reinforced concrete structure 20. The base treatment agent can be a cold primer, resulting in a base treatment agent layer 70. Then, the second waterproof layer 40 is applied. When the second waterproof layer 40 is laid to the corner of the reinforced concrete structure 20 and the plain concrete pad 10, a 200mm extension is reserved to obtain the second extension section 41.
[0050] Next, trim the first extension section 31 and the second extension section 41 to be flush, and cut the joint edge 50 as required. The length of the joint edge 50 is explained as 2×200mm+20mm. At the same time, ensure that the corner of the reinforced concrete structure 20 and the plain concrete pad 10 is drained in advance and dried, or use a hot air gun to dry the two waterproof layers to ensure that the surface is dry.
[0051] The cut joint edging 50 is wrapped around the first extension 31 and the second extension 41. Then, the third waterproof layer 60 is heated to 180℃~200℃ to make it more fluid and filled into the interior of the joint edging 50. It flows between the first extension 31 and the inner wall of the joint edging 50, between the first extension 31 and the second extension 41, and between the second extension 41 and the joint edging 50. During filling, the joint edging 50 is squeezed appropriately so that the third waterproof layer 60 overflows and fills the gap between the joint edging 50 and the reinforced concrete structure 20 and the plain concrete pad 10 to ensure a sealed connection.
[0052] After the third waterproof layer has cooled and solidified for 60 minutes, check its sealing performance. Once it passes inspection, protect it with XPS extruded polystyrene board or brickwork to prevent damage.
[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit this utility model. 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.
Claims
1. A waterproof structural foundation, characterized in that, It includes a first waterproof layer (30) disposed between the plain concrete cushion layer (10) and the reinforced concrete structure (20) and a second waterproof layer (40) disposed on the outside of the reinforced concrete structure (20). The plain concrete cushion layer (10) is located below the reinforced concrete structure (20), and the side end of the plain concrete cushion layer (10) extends to the outside of the reinforced concrete structure (20); the first waterproof layer (30) and the second waterproof layer (40) are connected by a joint edge (50), which is located on the outside of the plain concrete cushion layer (10) and the outside of the reinforced concrete structure (20).
2. The waterproof structural foundation structure according to claim 1, characterized in that, The first waterproof layer (30) is provided with a first extension section (31), and the second waterproof layer (40) is provided with a second extension section (41); one end of the first extension section (31) is connected to the first waterproof layer (30), and the other end of the first extension section (31) extends to the outside of the reinforced concrete structure (20); the second extension section (41) is horizontally arranged, one end of the second extension section (41) is connected to the second waterproof layer (40), and the other end of the second extension section (41) extends above the first extension section (31); the second extension section (41) is parallel to the first extension section (31). The second extension segment (41) and the first extension segment (31) both extend into the joint edge (50).
3. The waterproof structural foundation structure according to claim 2, characterized in that, The first extension segment (31) and the second extension segment (41) are of equal length.
4. The waterproof structural foundation structure according to claim 3, characterized in that, The length of the first extension segment (31) and the length of the second extension segment (41) are both 200 mm.
5. The waterproof structural foundation structure according to claim 2, characterized in that, Both the first extension segment (31) and the second extension segment (41) are bonded to the joint edge (50).
6. The waterproof structural foundation structure according to claim 5, characterized in that, A third waterproof layer (60) is provided inside the joint edging (50), and the third waterproof layer (60) is located between the first extension section (31) and the second extension section (41).
7. The waterproof structural foundation structure according to claim 6, characterized in that, A third waterproof layer (60) is provided between the inner wall of the first extension section (31) and the joint edge (50) and / or between the inner wall of the second extension section (41) and the joint edge (50).
8. The waterproof structural foundation structure according to claim 2, characterized in that, A third waterproof layer (60) is provided inside the joint edging (50). The vertical cross-section of the third waterproof layer (60) is an E-shaped structure. The third waterproof layer (60) is arranged in the same direction as the joint edging (50). The upper layer of the third waterproof layer (60) is arranged between the second extension section (41) and the inner wall of the joint edging (50). The middle layer of the third waterproof layer (60) is arranged between the first extension section (31) and the second extension section (41). The lower layer of the third waterproof layer (60) is arranged between the first extension section (31) and the inner wall of the joint edging (50).
9. The waterproof structural foundation structure according to claim 8, characterized in that, The upper layer of the third waterproof layer (60) extends to the outside of the joint edge (50) and contacts the second waterproof layer (40), the middle layer of the third waterproof layer (60) extends to the bottom of the second waterproof layer (40) and contacts the side end of the reinforced concrete structure (20), and the lower layer of the third waterproof layer (60) extends to the outside of the joint edge (50) and contacts the plain concrete cushion layer (10).
10. The waterproof structural foundation structure according to any one of claims 1 to 9, characterized in that, A base treatment agent layer (70) is provided between the second waterproof layer (40) and the reinforced concrete structure (20), and the base treatment agent layer (70) is located above the first waterproof layer (30).