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Large scale waterproof construction
From:2020.08.04 Share:
Waterproof construction overview (1). The waterproof construction projects of this project mainly include: ① basement waterproof construction; ② roof waterproof construction; ③ toilet waterproof construction; ④ balcony waterproof construction. 2) The requirement level of architectural design. 1. Basement waterproof construction: the basement waterproof construction scheme mainly includes: external anti external sticking method construction, external anti internal sticking method construction, off wall lining waterproof construction, etc. according to the technical code for waterproofing of Underground Engineering (GB 50108-2008), the building should have strict waterproof measures, and the underground waterproof level is grade I. ① The waterproof project of basement outdoor enclosure structure is divided into concrete structure engineering and impermeable concrete structure self waterproofing. The impermeability grade of basement foundation slab is 0.6MPa, the mix proportion of waterproof structure concrete shall be determined by laboratory, and the impermeability grade shall be one grade higher than the design grade (0.2MPa). ② There are two waterproof layers for the foundation slab, and the waterproof scheme of combining coiled material and coating is adopted. 1.5 mm thick EPDM waterproof membrane is used, and 2 mm thick polyurethane waterproof coating is used as waterproof coating. ③ In addition to the self waterproofing of the impermeable concrete structure of the basement exterior wall, the same two waterproof layers are adopted. The waterproof scheme of the combination of coiled material and coating is adopted. The 1.5 mm thick EPDM waterproof membrane is used, and the 2 mm thick polyurethane waterproof coating is used as the waterproof coating. The protective layer of waterproof layer adopts 40 thick polystyrene board. 2:8 lime soil shall be used to tamp and backfill in layers within 1 m of excavation outside the protective layer of side wall. Compaction coefficient > 0.95. ④ When the basement roof is not in the main body of the upper building, waterproof measures shall be taken on the roof, and the waterproof layer shall also adopt the waterproof scheme of combining coiled material and coating, and the protective layer of waterproof layer is 50 mm thick C20 fine aggregate concrete. 2. Roof waterproof construction: according to the technical code for roof engineering (GB 50207-94), the roof waterproof grade is grade II. The waterproof scheme of the combination of coil and coating is adopted. 1.5 mm thick EPDM waterproof membrane is used, and 2 mm thick polyurethane waterproof coating is used as waterproof coating. The protective layer on the waterproof layer is extruded polystyrene board. 3. Waterproof construction of toilet: the waterproof layer of toilet is 1.5mm thick polyurethane waterproof coating, and the waterproof layer is fine stone concrete protective layer with slope. The waterproof of toilet can also use polymer cement waterproof coating, which is a new material with healthy waterproof concept this year. This kind of material can not only achieve waterproof effect, but also ensure the safety and health of home.