Waterproof structure of concrete post-cast strip

Abstract

The utility model relates to the technical field of post-cast strip waterproofing, and discloses a concrete post-cast strip waterproof structure which comprises pre-cast concrete on the two sides, post-cast concrete is arranged between the pre-cast concrete on the two sides, and the post-cast concrete is arranged between the pre-cast concrete on the two sides. A surface layer is arranged between the upper surfaces of the first pouring concrete on the two sides and the upper surface of the middle later pouring concrete. According to the concrete post-cast strip waterproof structure, the surface layer covers the joint between the pre-cast concrete and the post-cast concrete, the situation that water exposed out of the joint is more prone to permeation is avoided, and the cement-based permeable crystallization type waterproof coating and the asphalt waterproof coiled material on the surface layer achieve the first waterproof effect; the water stop structure A, the water stop structure B and the three anti-seepage structures are installed at the joint of the first-pouring concrete and the second-pouring concrete, the second waterproof effect is achieved, water is prevented from permeating downwards after permeating into the gap, multiple waterproof measures are taken for the gap, and water seepage at the gap is effectively treated.

Description

Technical Field

[0001] The utility model relates to the technical field of post-cast strip waterproofing, in particular to a concrete post-cast strip waterproofing structure. Background Art

[0002] Post-cast strips are concrete strips set at the corresponding positions of the foundation slab, wall, and beam in accordance with the design or construction specifications to prevent harmful cracks that may occur in reinforced concrete structures due to uneven shrinkage or settlement. Post-cast strips temporarily divide the structure into several parts. After the internal shrinkage of the components, the construction joint concrete is poured again after a certain period of time to connect the structure into a whole. The pouring time of post-cast strips should be selected when the temperature is relatively low. Cement or concrete with a trace amount of aluminum powder added to cement can be poured. Its strength grade should be one level higher than the strength of the component to prevent cracks from appearing between the new and old concretes and form weak points.

[0003] The prior art, such as publication number: CN213268399U, discloses a concrete post-casting strip waterproof structure, including a post-casting strip body, a concrete periphery, a protective layer, a waterproof roll layer, a cushion layer and a surface layer, wherein the post-casting strip body is embedded in the concrete periphery. In the utility model, by setting a protective layer, a certain waterproof effect is achieved, and the cushion layer is prevented from being damaged by direct contact between the concrete periphery with a higher hardness and the cushion layer, and a certain buffering effect is achieved. The waterproof roll layer is set below the post-casting strip body to further improve the waterproof performance of the post-casting strip body at the setting position, and ensure the reliability of the post-casting strip body.

[0004] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: no effective anti-water seepage treatment is performed between the contact surfaces of the first poured concrete and the later poured concrete, the gap between the first poured concrete and the later poured concrete cannot be effectively treated, and the waterproof effect is poor.

[0005] To this end, we propose a concrete post-cast strip waterproof structure. Utility Model Content

[0006] In view of the above-mentioned existing problems that no effective anti-seepage treatment is performed between the contact surfaces of the first poured concrete and the later poured concrete, the gap between the first poured concrete and the later poured concrete cannot be effectively treated, and the waterproof effect is poor, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a concrete post-cast zone waterproof structure, which aims to: carry out effective anti-water seepage treatment between the contact surface of the first cast concrete and the post-cast concrete, effectively treat the gap between the first cast concrete and the post-cast concrete, and achieve good waterproof effect.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a concrete post-casting waterproof structure, comprising pre-casting concrete on both sides, post-casting concrete is arranged between the pre-casting concrete on both sides, and a surface layer is arranged between the pre-casting concrete on both sides and the upper surface of the middle post-casting concrete;

[0009] Waterstop cavities A are opened at the upper positions of the opposite surfaces of the first poured concrete on both sides and at the upper positions of the two sides of the front of the later poured concrete, and a waterstop structure A is installed between the two waterstop cavities A on the same side. Waterstop cavities B are opened at the lower positions of the opposite surfaces of the first poured concrete on both sides and at the lower positions of the two sides of the front of the later poured concrete, and a waterstop structure B is installed between the two waterstop cavities B on the same side, and the structural sizes of the waterstop structure A and the waterstop structure B are consistent.

[0010] As a preferred solution of the concrete post-cast strip waterproof structure described in the utility model, the water-stop structure A includes a water-stop steel plate, the outer wall surface of the water-stop steel plate is bonded with a rubber layer B, and the outer wall surface of the rubber layer B is provided with a water-swellable water-stop glue A.

[0011] As a preferred solution of the concrete post-cast zone waterproof structure described in the utility model, wherein: the inner wall surface of the water-stop steel plate is bonded with a rubber layer C, and the inner wall surface of the rubber layer C is provided with a water-swellable water-stop glue B.

[0012] As a preferred solution of the concrete post-cast zone waterproof structure described in the utility model, wherein: anti-seepage cavities are opened on both sides of the post-cast concrete, and three anti-seepage structures are installed inside the anti-seepage cavities.

[0013] As a preferred solution of the concrete post-cast strip waterproof structure described in the utility model, there are three anti-seepage structures, one is located above the water-stop structure A, one is located between the water-stop structure A and the water-stop structure B, and the last one is located below the water-stop structure B.

[0014] As a preferred solution of the concrete post-cast zone waterproof structure described in the utility model, the anti-seepage structure includes a rubber layer A, and a waterstop is provided on one side of the rubber layer A.

[0015] As a preferred solution of the concrete post-cast strip waterproof structure described in the utility model, the surface layer includes a cement-based penetrating crystalline waterproof coating, the upper surface of the cement-based penetrating crystalline waterproof coating is provided with an asphalt waterproof membrane, and the upper surface of the asphalt waterproof membrane is provided with a cement layer.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model provides a surface layer integrally on the upper surfaces of the first poured concrete and the second poured concrete, covers the joints between the first poured concrete and the second poured concrete, avoids the joints being exposed to the outside and water being more easily penetrated, and the cement-based penetrating crystalline waterproof coating and the asphalt waterproof membrane on the surface layer play a first waterproof effect, then, at the joints of the first poured concrete and the second poured concrete, the water-stop structure A, the water-stop structure B and the three anti-seepage structures are installed, play a second waterproof effect, avoid water from seeping into the gap and continuing to seep downward, take multiple waterproof measures at the gap, effectively deal with the water seepage at the gap, and have a good waterproof effect.

[0018] 2. In the utility model, the waterstop steel plates on the waterstop structure A and the waterstop structure B are arranged opposite to each other, and the waterstop steel plate on the same side performs double waterproofing, upper and lower, from one side, so as to improve the waterproofing effect on one side, and the inner and outer wall surfaces of the waterstop steel plate are installed with water-swelling waterstop glue, which expands when wet and once again achieves the waterproofing effect. At the same time, the inner and outer wall surfaces of the waterstop steel plate are installed with rubber layers, and the elastic effect of the rubber layer can make the water-swelling waterstop glue fully contact the side wall surface of the first cast concrete, thereby ensuring the water-stopping effect of the water-swelling waterstop glue.

[0019] 3. The utility model installs three anti-seepage structures at the gap between the first poured concrete and the later poured concrete. The three anti-seepage structures are evenly distributed at the positions not occupied by the water-stop structure A and the water-stop structure B, so as to further fill the joint surface between the first poured concrete and the later poured concrete. The rubber layer A and the water-stop strip on the anti-seepage structure seal and waterproof the joint surface between the first poured concrete and the later poured concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of a concrete post-cast zone waterproof structure.

[0022] Figure 2 The utility model is a schematic diagram of the first poured concrete and the post-cast concrete structure of the concrete post-cast belt waterproof structure.

[0023] Figure 3 The utility model is a schematic structural diagram of the first poured concrete and the post poured concrete of the concrete post poured belt waterproof structure in the separated state.

[0024] Figure 4The utility model is a schematic diagram of a water stop structure A of a concrete post-cast zone waterproof structure.

[0025] Figure 5 The utility model is a schematic diagram of the local structure of the surface layer of a concrete post-cast waterproof structure.

[0026] Description of reference numerals:

[0027] 1. Pour concrete first; 2. Pour concrete later; 3. Surface layer; 31. Cement-based penetrating crystalline waterproof coating; 32. Asphalt waterproof membrane; 33. Cement layer; 4. Waterstop structure A; 41. Waterstop steel plate; 42. Rubber layer B; 43. Water-swelling waterstop glue A; 44. Rubber layer C; 45. Water-swelling waterstop glue B; 5. Waterstop structure B; 6. Anti-seepage structure; 61. Rubber layer A; 62. Waterstop strip; 7. Waterstop cavity A; 8. Waterstop cavity B; 9. Anti-seepage cavity. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Example 1

[0030] Reference Figure 1-5 , which is the first embodiment of the utility model, provides a concrete post-casting belt waterproof structure, which comprises pre-casting concrete 1 on both sides, post-casting concrete 2 is arranged between the pre-casting concrete 1 on both sides, and a surface layer 3 is arranged between the upper surface of the pre-casting concrete 1 on both sides and the middle post-casting concrete 2;

[0031] Waterstop cavities A7 are opened at the upper positions of the opposite surfaces of the first poured concrete 1 on both sides and at the upper positions of the front sides of the later poured concrete 2, and a waterstop structure A4 is installed between the two waterstop cavities A7 on the same side. Waterstop cavities B8 are opened at the lower positions of the opposite surfaces of the first poured concrete 1 on both sides and at the lower positions of the front sides of the later poured concrete 2, and a waterstop structure B5 is installed between the two waterstop cavities B8 on the same side, and the structural sizes of the waterstop structure A4 and the waterstop structure B5 are consistent, and the waterstop steel plates 41 on the waterstop structure A4 and the waterstop structure B5 are arranged opposite to each other, and the upper waterstop steel plate 41 on the same side performs upper and lower waterproofing from one side, so as to improve the waterproofing effect on one side, and.

[0032] The water-stop structure A4 comprises a water-stop steel plate 41 , the outer wall surface of which is bonded with a rubber layer B42 , and the outer wall surface of the rubber layer B42 is provided with a water-swellable water-stop adhesive A43 .

[0033] A rubber layer C44 is bonded to the inner wall surface of the water-stop steel plate 41 , and a water-swellable water-stop adhesive B45 is provided on the inner wall surface of the rubber layer C44 .

[0034] The inner and outer walls of the waterstop steel plate 41 are both installed with a rubber layer. The elastic effect of the rubber layer allows the water-swelling waterstop adhesive to fully contact the side wall surface of the pre-cast concrete 1, thereby ensuring the water-stopping effect of the water-swelling waterstop adhesive. The inner and outer walls of the waterstop steel plate 41 are both installed with water-swelling waterstop adhesive, which expands when exposed to water, thus achieving a waterproof effect again.

[0035] During use, when the first cast concrete 1 on both sides is cast and formed, the water stop structure A4 and the water stop structure B5 are first cast and fixed on the side of the first cast concrete 1. When the first cast concrete 1 is solidified and formed, the anti-seepage structure 6 is fixed on the side of the first cast concrete 1. At this time, the first cast concrete 1 on both sides is formed, and then the post-cast concrete 2 is cast and formed between the first cast concrete 1 on both sides. When the first cast concrete 1 and the post-cast concrete 2 are both formed, the surface layer 3 is installed on the upper surface of the first cast concrete 1 and the post-cast concrete 2;

[0036] Then, at the joints of the first poured concrete 1 and the later poured concrete 2, the water-stop structure A4, the water-stop structure B5 and the three anti-seepage structures 6 are installed to play a second waterproof role, preventing water from seeping into the gap and continuing to penetrate downward. Multiple waterproofing measures are taken at the gap, and the water seepage in the gap is effectively treated, with good waterproofing effect.

[0037] Example 2

[0038] Reference Figure 1-5 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0039] Anti-seepage cavities 9 are provided on both sides of the post-cast concrete 2 , and the water-stop cavity A7 is connected to the interior of the anti-seepage cavity 9 . Three anti-seepage structures 6 are installed inside the anti-seepage cavity 9 .

[0040] There are three anti-seepage structures 6, one is located above the water-stop structure A4, one is located between the water-stop structure A4 and the water-stop structure B5, and the last one is located below the water-stop structure B5. The three anti-seepage structures 6 are evenly distributed in the positions not occupied by the water-stop structure A4 and the water-stop structure B5, so as to further fill the joint surface between the first poured concrete 1 and the later poured concrete 2.

[0041] The anti-seepage structure 6 includes a rubber layer A61, and a waterstop strip 62 is provided on one side of the rubber layer A61. The rubber layer A61 and the waterstop strip 62 on the anti-seepage structure 6 seal and waterproof the joint surface between the first cast concrete 1 and the later cast concrete 2.

[0042] The surface layer 3 includes a cement-based penetrating crystalline waterproof coating 31, an asphalt waterproof membrane 32 is arranged on the upper surface of the cement-based penetrating crystalline waterproof coating 31, and a cement layer 33 is arranged on the upper surface of the asphalt waterproof membrane 32. The surface layer 3 is integrally arranged on the upper surface of the first poured concrete 1 and the later poured concrete 2, and the joint between the first poured concrete 1 and the later poured concrete 2 is covered to prevent the joint from being exposed to the outside and water from penetrating more easily. The cement-based penetrating crystalline waterproof coating 31 and the asphalt waterproof membrane 32 on the surface layer 3 play a first waterproof effect.

[0043] During use, three anti-seepage structures 6 are installed in the gap between the first poured concrete 1 and the later poured concrete 2. The three anti-seepage structures 6 are evenly distributed in the positions not occupied by the water-stop structure A4 and the water-stop structure B5, thereby further filling the joint surface between the first poured concrete 1 and the later poured concrete 2.

[0044] The remaining structures are the same as those of Example 1.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A concrete post-cast strip waterproof structure, comprising pre-cast concrete (1) on both sides, post-cast concrete (2) arranged between the pre-cast concrete (1) on both sides, characterized in that: A surface layer (3) is provided between the upper surfaces of the first-cast concrete (1) on both sides and the later-cast concrete (2) in the middle; Water stop cavities A (7) are provided at upper positions of the opposite surfaces of the first cast concrete (1) on both sides and at upper positions of the front sides of the later cast concrete (2); a water stop structure A (4) is installed between the two water stop cavities A (7) on the same side; water stop cavities B (8) are provided at lower positions of the opposite surfaces of the first cast concrete (1) on both sides and at lower positions of the front sides of the later cast concrete (2); a water stop structure B (5) is installed between the two water stop cavities B (8) on the same side, and the structural sizes of the water stop structure A (4) and the water stop structure B (5) are consistent.

2. A concrete post-casting waterproof structure according to claim 1, characterized in that: The water-stop structure A (4) comprises a water-stop steel plate (41), the outer wall surface of the water-stop steel plate (41) is bonded with a rubber layer B (42), and the outer wall surface of the rubber layer B (42) is provided with a water-swellable water-stop glue A (43).

3. A concrete post-casting waterproof structure according to claim 2, characterized in that: The inner wall surface of the water-stop steel plate (41) is bonded with a rubber layer C (44), and the inner wall surface of the rubber layer C (44) is provided with a water-swellable water-stop glue B (45).

4. A concrete post-cast zone waterproof structure according to claim 3, characterized in that: Anti-seepage cavities (9) are provided on both sides of the post-cast concrete (2), and three anti-seepage structures (6) are installed inside the anti-seepage cavity (9).

5. A concrete post-casting waterproof structure according to claim 4, characterized in that: The three anti-seepage structures (6) are located, one above the water-stop structure A (4), one between the water-stop structure A (4) and the water-stop structure B (5), and the last one below the water-stop structure B (5).

6. A concrete post-cast zone waterproof structure according to claim 5, characterized in that: The anti-seepage structure (6) comprises a rubber layer A (61), and a water stop strip (62) is provided on one side of the rubber layer A (61).

7. A concrete post-cast zone waterproof structure according to claim 6, characterized in that: The surface layer (3) comprises a cement-based permeable crystallization waterproof coating (31), an asphalt waterproofing coiled material (32) is arranged on the upper surface of the cement-based permeable crystallization waterproof coating (31), and a cement layer (33) is arranged on the upper surface of the asphalt waterproofing coiled material (32).

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