Pre-paving anti-sticking waterproof structure and construction method

Abstract

The invention belongs to the technical field of building waterproofing, and discloses a pre-paving anti-sticking waterproof structure and a construction method. The structure sequentially comprises a concrete cushion layer, a pre-laid polymer waterproof roll layer, an anti-seepage self-repairing waterproof layer and an anti-seepage concrete layer from bottom to top. According to the waterproof structure, the rigid-flexible design principle is adopted, the deformation resistance and crack resistance of the waterproof structure are achieved by means of high extension and high strength of the pre-laid polymer waterproof coiled material, meanwhile, the dry-spread cement-based capillary crystalline waterproof material can improve the local anti-seepage grade and compressive strength of the anti-seepage concrete, an anti-seepage self-repairing waterproof layer is formed, and the anti-seepage performance of the waterproof structure is improved. And the dry-spread cement-based capillary crystalline waterproof material also has the capability of improving the self-repairing capability of the concrete in a water leakage environment.

Description

technical field [0001] The invention belongs to the technical field of building waterproofing, and more specifically relates to a pre-paved anti-adhesive waterproof structure and a construction method. Background technique [0002] At present, there are mainly five methods for basement floor waterproofing: [0003] The first method: thermal bonding method, the main methods are: non-curing + SBS waterproof membrane, non-curing + polymer modified bitumen waterproof membrane, the specific construction method is to first scrape or spray 2mm non-curing on the cushion Rubber asphalt waterproof coating, then hot-bonded 4mm SBS modified asphalt waterproofing membrane or 3mm self-adhesive polymer modified asphalt waterproofing membrane, then pouring 50mm concrete protective layer, and then binding steel bars, building floor concrete. [0004] The second method: full-adhesive construction method, the main methods are: 3+4SBS modified asphalt waterproofing membrane, 3+3 self-adhesive ...

AI Technical Summary

Problems solved by technology

[0009] 1. When the hot-bonding method or the full-bonding method is used for construction, the waterproof layer and the cushion are fully glued, which does not conform to the waterproof design concept. The waterproof layer should be fully glued to the structural layer. The waterproof cushion has low strength and is easy to crack in the later stage. Once the cushion cracks , the waterproof layer is easy to crack, because there is no full adhesion between the waterproof layer and the structural layer, once it leaks, there will be a large area of ​​water channeling, and it is difficult to find the leak point;

[0010] 2. The third empty paving method: laying empty between the cushion layer, the probability of damage to the waterproof layer is reduced, but there is still a concrete protective layer between the structural layer. Once the waterproof layer leaks, water channeling will still occur later. It is difficult to find the source of leakage, and it is difficult to maintain in the later stage;

In this construction method, after the coiled material is laid and pasted, steel bars will be bound on the coiled material and concrete will be poured. However, the waterproof layer will be damaged to a certain extent during the later binding of the steel bars and the welding process of the steel bars, forming leakage points.

[0012] 4. The fifth method can improve the impermeability of the concrete itself. When the concrete crack is less than 0.4mm, it has a better self-healing effect, but when the concrete crack is greater than 0.4mm, it will lose the waterproof effect

It is purely rigid waterproof and has poor resistance to deformation, which does not meet the waterproof concept of combining rigidity and softness in the basement

Images