GRASi 6979 is a cement-based waterproof sealant which has chemical reaction with wet cement substrate. It can be in the collective capillary zone formation of insoluble crystalline layer, so that the surface can be long-term waterproof, but still have breathing function.
The product can penetrate into the substrate and become a component of the substrate, so that it does not blister and fall off like ordinary coatings. No cracking or perforation, so no need for caulking. It has the same thermal expansion and cold shrinkage as the cement base. When there is water, the crystal can penetrate the concrete to 0.4mm, and the crystal growth rate is about 1cm depth / week.
ApplicationsApplication to the cement base surface such as cement block, cement coating and concrete block ect. More suitable for occasions such as the ground and wall, swimming pool, reservoir, tunnel, dam and other water invasion occasions of commercial, industrial and civil buildings. Properties
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Substrates should be all in wet before application, then rolling, smearing, uniform coating to the substrate surface, 2-2.5kg/ square meters for 2 times (which depends on requirements of anti permeability and substrate surface.)
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Remarks : Curing in lab, 25 |
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