Construction Method of Waterproofing by Pre-laying and Inverse Bonding for Post-pouring Belt

Abstract

The present invention relates to the technical field of building waterproof engineering, and is a construction method for pre-laying and reverse-adhering waterproofing of post-cast strips; the first step is to build a support frame; the second step is to clean and polish; the third step is to install a horizontal support plate and a lower waterproof membrane. After removing the protective film on the upper surface of the lower waterproof membrane, the left end and the right end of the lower waterproof membrane are respectively pressed and fixed at the bottom of the left concrete slab and the right concrete slab; the fourth step is to fixedly connect the longitudinal steel bars; the fifth step is to pour concrete into the post-cast strip until it is flush with the top of the post-cast strip, and the concrete reacts and adheres to the lower waterproof membrane and is integrally fixed. The present invention adopts the double-sided reverse-adhering waterproof measures of the upper waterproof membrane and the lower waterproof membrane, which respectively react and adhere to the concrete in the post-cast strip and are integrally fixed, so that the left concrete slab, the right concrete slab, the concrete in the post-cast strip, the upper waterproof membrane and the lower waterproof membrane are more closely combined into one body, with better waterproof effect, and greatly reduces the maintenance frequency and maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of building waterproof engineering, and is a pre-laying and reverse-adhering waterproof construction method for post-cast strips. Background Art

[0002] In underground engineering, especially in building basements, when the length is long or the area is large, post-cast strips are often designed to solve the crack problem caused by hydration shrinkage. The post-cast strip divides the basement floor (together with the side wall and the top plate) at a certain interval, and the dividing strip is usually 800 mm to 1000 mm wide. At least two months after the concrete slabs separated by the post-cast strip are poured, the post-cast strip is poured again; in engineering practice, after the concrete in the post-cast strip is poured, a layer of waterproof coiled material is usually laid on the top for waterproof treatment. However, water seepage will occur at the bottom of the concrete at the position of the post-cast strip after a period of use, which requires frequent maintenance, resulting in time-consuming, laborious and high maintenance costs. Summary of the Invention

[0003] The present invention provides a pre-laying and reverse-adhering waterproof construction method for post-cast strips, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problem that water seepage occurs at the bottom of the concrete at the position of the post-cast strip after a period of use, which requires frequent maintenance, resulting in time-consuming, laborious and high maintenance costs.

[0004] The technical solution of the present invention is achieved by the following measures: A pre-laid and reverse-adhered waterproof construction method for post-cast strip is carried out according to the following steps: First step, build a support frame below the position of the post-cast strip formed between the left concrete slab and the right concrete slab; Second step, clean and polish the upper edges and lower edges of the left concrete slab and the right concrete slab respectively; Third step, install a horizontal support plate and a lower waterproof coiled material on the top of the support frame in sequence from bottom to top. After removing the protective film on the upper surface of the lower waterproof coiled material, press the left end of the lower waterproof coiled material and integrally fix it with the bottom edge of the left concrete slab, and press the right end of the lower waterproof coiled material and integrally fix it with the bottom edge of the right concrete slab; Fourth step, fixedly connect at least two longitudinal steel bars at intervals from left to right on the transverse steel bars between the left concrete slab and the right concrete slab; Fifth step, pour concrete into the post-cast strip until it is flush with the top of the post-cast strip, so that the concrete is integrally fixed with the left concrete slab and the right concrete slab respectively, and the concrete reacts and adheres to the lower waterproof coiled material and is integrally fixed; Sixth step, lay an upper waterproof coiled material on the top of the poured concrete. Before laying, remove the protective film on the lower surface of the upper waterproof coiled material, press the left end of the upper waterproof coiled material and integrally fix it with the top edge of the left concrete slab, and press the right end of the upper waterproof coiled material and integrally fix it with the top edge of the right concrete slab, and the concrete reacts and adheres to the upper waterproof coiled material and is integrally fixed; Seventh step, remove the protective film on the upper surface of the upper waterproof coiled material and integrally fix the upper decorative layer; Eighth step, after the poured concrete solidifies and dries, remove the support frame and the horizontal support plate, remove the protective film on the lower surface of the lower waterproof coiled material and integrally fix the lower decorative layer.

[0005] The following is a further optimization or / and improvement of the above-mentioned invention technical solution:

[0006] There is a spacing between the above-mentioned longitudinal steel bars and the upper waterproof coiled material; there is a spacing between the longitudinal steel bars and the lower waterproof coiled material.

[0007] The width of the above-mentioned horizontal support plate is greater than or equal to the width of the lower waterproof coiled material.

[0008] The width of the left end of the above-mentioned upper waterproof coiled material covering the left concrete slab is 10 cm to 20 cm, and the width of the right end of the upper waterproof coiled material covering the right concrete slab is 10 cm to 20 cm; the width of the left end of the lower waterproof coiled material covering the left concrete slab is 10 cm to 20 cm, and the width of the right end of the lower waterproof coiled material covering the right concrete slab is 10 cm to 20 cm.

[0009] The above-mentioned upper decorative layer is a putty layer or a mortar layer or a paint layer or tiles; the lower decorative layer is a putty layer or a mortar layer or a paint layer.

[0010] The concrete strength in the above-mentioned post-cast strip is greater than the strength of the left concrete slab; the concrete strength in the post-cast strip is greater than the strength of the right concrete slab.

[0011] The present invention adopts a double-sided anti-adhesive waterproof measure of an upper waterproof coiled material and a lower waterproof coiled material, which respectively react and adhere to the concrete in the post-cast strip and are integrally fixed, so that the left concrete slab, the right concrete slab, the concrete in the post-cast strip, the upper waterproof coiled material and the lower waterproof coiled material are more closely combined into one body, with better waterproof effect, greatly reducing the maintenance frequency and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Appendix Figure 1 It is a schematic main sectional view of double-sided anti-adhesive waterproofing after the post-cast strip of the present invention is poured.

[0013] The codes in the drawings are respectively: 1 is the left concrete slab, 2 is the right concrete slab, 3 is the post-cast strip, 4 is the lower waterproof coiled material, 5 is the transverse steel bar, 6 is the longitudinal steel bar, 7 is the concrete, 8 is the upper waterproof coiled material, 9 is the upper decorative layer, and 10 is the lower decorative layer. EMBODIMENTS

[0014] The present invention is not limited by the following embodiments, and the specific implementation manners can be determined according to the technical solution of the present invention and the actual situation.

[0015] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is carried out according to the layout mode of the attached drawings of the specification. For example, the positional relationships such as front, rear, upper, lower, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 The positional relationships such as front, rear, upper, lower, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 of the specification.

[0016] The present invention will be further described below in conjunction with the embodiments and the drawings:

[0017] Example 1, as shown in the appendix Figure 1As shown in the figure, the post-cast strip pre-laid and self-adhered waterproof construction method is carried out according to the following steps: The first step is to build a support frame under the position of the post-cast strip 3 formed between the left concrete slab 1 and the right concrete slab 2; the second step is to clean and polish the upper and lower edges of the left concrete slab 1 and the right concrete slab 2 respectively; the third step is to install a horizontal support plate and a lower waterproof coiled material 4 on the top of the support frame from bottom to top in sequence. After removing the protective film on the upper surface of the lower waterproof coiled material 4, press the left end of the lower waterproof coiled material 4 and integrally fix it with the bottom edge of the left concrete slab 1, and press the right end of the lower waterproof coiled material 4 and integrally fix it with the bottom edge of the right concrete slab 2; the fourth step is to fixedly connect at least two longitudinal steel bars 6 at intervals from left to right on the transverse steel bar 5 between the left concrete slab 1 and the right concrete slab 2; the fifth step is to pour concrete 7 into the post-cast strip 3 until it is flush with the top of the post-cast strip 3, so that the concrete 7 is integrally fixed with the left concrete slab 1 and the right concrete slab 2 respectively, and the concrete 7 reacts and adheres integrally with the lower waterproof coiled material 4; the sixth step is to lay an upper waterproof coiled material 8 on the top of the poured concrete 7. Before laying, remove the protective film on the lower surface of the upper waterproof coiled material 8, press the left end of the upper waterproof coiled material 8 and integrally fix it with the top edge of the left concrete slab 1, and press the right end of the upper waterproof coiled material 8 and integrally fix it with the top edge of the right concrete slab 2, and the concrete 7 reacts and adheres integrally with the upper waterproof coiled material 8; the seventh step is to remove the protective film on the upper surface of the upper waterproof coiled material 8 and integrally fix the upper decorative layer 9; the eighth step is to remove the support frame and the horizontal support plate after the poured concrete 7 solidifies and dries, and remove the protective film on the lower surface of the lower waterproof coiled material 4 and integrally fix the lower decorative layer 10. The lower waterproof coiled material 4 and the upper waterproof coiled material 8 can be well-known and commonly used; when pouring the post-cast strip 3, the concrete 7 will react and adhere integrally with the mucosal film on the lower waterproof coiled material 4 and the upper waterproof coiled material 8 after removing the protective film, thus greatly improving the sealing performance between the lower waterproof coiled material 4 and the upper waterproof coiled material 8 and the concrete 7 and achieving a better waterproof effect; in this embodiment of the post-cast strip pre-laid and self-adhered waterproof construction method, there is no leakage or seepage phenomenon after running for 3 years, which proves that it has a good waterproof effect; calculated over 10 years, this embodiment of the post-cast strip pre-laid and self-adhered waterproof construction method greatly reduces the maintenance frequency and maintenance cost compared with the existing post-cast strip waterproof construction method, and the maintenance cost is reduced by 80% to 90%.

[0018] Embodiment 2, as shown in the appendix Figure 1 As shown in the figure, as an optimization of the above embodiment, there is a spacing between the longitudinal steel bar 6 and the upper waterproof coiled material 8; there is a spacing between the longitudinal steel bar 6 and the lower waterproof coiled material 4. In this way, it effectively prevents the contact between the longitudinal steel bar 6 and the lower waterproof coiled material 4 and the upper waterproof coiled material 8 during the construction process, and avoids the risk of scratching the lower waterproof coiled material 4 and the upper waterproof coiled material 8.

[0019] Embodiment 3, as an optimization of the above embodiment, the width of the horizontal support plate is greater than or equal to the width of the lower waterproof coiled material 4. In this way, it is convenient to better press and fix the left end and the right end of the lower waterproof coiled material 4 at the bottom of the left concrete slab 1 and the right concrete slab 2 respectively during the construction process.

[0020] Embodiment 4, as an optimization of the above embodiment, the width of the left end of the upper waterproof coiled material 8 covering the left concrete slab 1 is 10 cm to 20 cm, and the width of the right end of the upper waterproof coiled material 8 covering the right concrete slab 2 is 10 cm to 20 cm; the width of the left end of the lower waterproof coiled material 4 covering the left concrete slab 1 is 10 cm to 20 cm, and the width of the right end of the lower waterproof coiled material 4 covering the right concrete slab 2 is 10 cm to 20 cm. In this way, the lower waterproof coiled material 4 and the upper waterproof coiled material 8 can better wrap around the left concrete slab 1 and the right concrete slab 2, playing a better sealing role, so as to achieve a better waterproof effect.

[0021] Embodiment 5, as an optimization of the above embodiment, the upper decorative layer 9 is a putty layer or a mortar layer or a paint layer or tiles; the lower decorative layer 10 is a putty layer or a mortar layer or a paint layer. In this way, it can more effectively protect the lower waterproof coiled material 4 and the upper waterproof coiled material 8 from scratches and aging caused by sunlight, so as to better protect the lower waterproof coiled material 4 and the upper waterproof coiled material 8.

[0022] Embodiment 6, as an optimization of the above embodiment, the strength of the concrete 7 in the post-cast strip 3 is greater than the strength of the left concrete slab 1; the strength of the concrete 7 in the post-cast strip 3 is greater than the strength of the right concrete slab 2.

[0023] In summary, the present invention adopts the double-sided anti-adhesive waterproof measures of the upper waterproof coiled material 8 and the lower waterproof coiled material 4, which react and adhere to the concrete 7 in the post-cast strip 3 respectively and are integrally fixed, so that the left concrete slab 1, the right concrete slab 2, the concrete 7 in the post-cast strip 3, the upper waterproof coiled material 8 and the lower waterproof coiled material 4 are more closely combined into one body, with better waterproof effect, greatly reducing the maintenance frequency and maintenance cost.

[0024] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effects. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A construction method for pre-laying and reverse-adhering waterproofing of post-cast strips, characterized in that, The steps are as follows: First step, build a support frame below the position of the post-cast strip formed between the left concrete slab and the right concrete slab; Second step, clean and polish the upper edges and lower edges of the left concrete slab and the right concrete slab respectively; Third step, install a horizontal support plate and a lower waterproof membrane on the top of the support frame in sequence from bottom to top. After removing the protective film on the upper surface of the lower waterproof membrane, press the left end of the lower waterproof membrane and integrally fix it with the bottom edge of the left concrete slab, and press the right end of the lower waterproof membrane and integrally fix it with the bottom edge of the right concrete slab; Fourth step, fixedly connect at least two longitudinal steel bars at intervals from left to right on the transverse steel bars between the left concrete slab and the right concrete slab; Fifth step, pour concrete into the post-cast strip until it is flush with the top of the post-cast strip, so that the concrete is integrally fixed with the left concrete slab and the right concrete slab respectively, and the concrete reacts and adheres to the lower waterproof membrane and is integrally fixed; Sixth step, lay an upper waterproof membrane on the top of the poured concrete. Before laying, remove the protective film on the lower surface of the upper waterproof membrane, press the left end of the upper waterproof membrane and integrally fix it with the top edge of the left concrete slab, and press the right end of the upper waterproof membrane and integrally fix it with the top edge of the right concrete slab, and the concrete reacts and adheres to the upper waterproof membrane and is integrally fixed; Seventh step, remove the protective film on the upper surface of the upper waterproof membrane and integrally fix the upper decorative layer; Eighth step, after the poured concrete solidifies and dries, remove the support frame and the horizontal support plate, remove the protective film on the lower surface of the lower waterproof membrane and integrally fix the lower decorative layer.

2. The post-cast strip pre-laying and reverse adhesion waterproof construction method according to claim 1, wherein: There is a spacing between the longitudinal steel bars and the upper waterproof membrane; there is a spacing between the longitudinal steel bars and the lower waterproof membrane.

3. The post-cast strip pre-laying and reverse adhesion waterproof construction method according to claim 1 or 2, characterized in that: The width of the horizontal support plate is greater than or equal to the width of the lower waterproof membrane.

4. The post-cast strip pre-laying and reverse adhesion waterproof construction method according to claim 1 or 2, characterized in that: The width that the left end of the upper waterproof membrane covers the left concrete slab is 10 cm to 20 cm, and the width that the right end of the upper waterproof membrane covers the right concrete slab is 10 cm to 20 cm; the width that the left end of the lower waterproof membrane covers the left concrete slab is 10 cm to 20 cm, and the width that the right end of the lower waterproof membrane covers the right concrete slab is 10 cm to 20 cm.

5. The post-cast strip pre-laid and self-adhered waterproof construction method according to claim 3, characterized in that: The width that the left end of the upper waterproof membrane covers the left concrete slab is 10 cm to 20 cm, and the width that the right end of the upper waterproof membrane covers the right concrete slab is 10 cm to 20 cm; the width that the left end of the lower waterproof membrane covers the left concrete slab is 10 cm to 20 cm, and the width that the right end of the lower waterproof membrane covers the right concrete slab is 10 cm to 20 cm.

6. The post-cast strip pre-laying and reverse adhesion waterproof construction method according to claim 1 or 2, characterized in that: The upper decorative layer is a putty layer or a mortar layer or a paint layer or tiles; the lower decorative layer is a putty layer or a mortar layer or a paint layer.

7. The post-cast strip pre-laid and self-adhered waterproof construction method according to claim 3, characterized in that: The upper decorative layer is a putty layer or a mortar layer or a paint layer or tiles; the lower decorative layer is a putty layer or a mortar layer or a paint layer.

8. The post-cast strip pre-laid and self-adhered waterproof construction method according to claim 5, wherein: The upper decorative layer is a putty layer or a mortar layer or a paint layer or tiles; the lower decorative layer is a putty layer or a mortar layer or a paint layer.

9. The post-cast strip pre-laying and reverse sticking waterproof construction method according to claim 1 or 2, characterized in that: The strength of the concrete in the post-cast strip is greater than the strength of the left concrete slab; the strength of the concrete in the post-cast strip is greater than the strength of the right concrete slab.

10. The post-cast strip pre-laying and anti-sticking waterproof construction method according to claim 8, characterized in that: The strength of the concrete in the post-cast strip is greater than the strength of the left concrete slab; the strength of the concrete in the post-cast strip is greater than the strength of the right concrete slab.

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