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Scientific concept of waterproof is the basis of waterproof design. Landun advocates the lasting bond of waterproof materials and concrete structures. Besides bond strength, it also requires maintaining the bond durability. Only the waterproof materials and the concrete structure of the permanent effective bond can root out the occurrence of channeling water to ensure no leakage of the buildings.

Economical selection of materials is the sublimation of waterproof design. CPC non-asphalt-based waterproof system provides different solutions directing at different parts of the building: use CPC non-asphalt-based durable reaction-type waterproof roll made of high density polyethylene as the basement floor, and choose pre-reverse anti-sticking method during the roll construction.The waterproof layer can directly bond with the concrete structure layer, so that the waterproof layer will not be affected by the deformation of the foundation and it spares the construction of leveling layer and the protective layer, so as to achieve the economy of workers, time and price. For the basement sidewalls, roof and roofing, use the composite waterproof practice by CPC non-asphalt-based non-solidified rubber waterproof paint and CPC non-asphalt-based durable reactive polymer self-adhesive waterproof roll. The former is non-curing waterproof paint and can perform ultra-strong adhesion if sticking to the foundation and roll layer; additionally, such paint can also absorb the deformation stress of the foundation level so that the stress will not damage the roll waterproof layer. The non-asphalt-based durable reactive polymer self-adhesive waterproof roll with strong cross-laminated membrane has high tear strength and weatherability, and capable of protecting self-adhesive layer and CPC coating layer, to greatly improve the durability of composite waterproof layer. The coating can be laid after been scraped, which can be described as "once construction and two layers of fortification".

Waterproof construction practices are as follows, demonstrated by China Building Standard Design and Research Institute and published in the National Building Standard Atlas - Building waterproof System Construction (8) 15CJ40-8.











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