The infiltration principle of infiltration crystalline waterproof material

Permeable crystalline waterproof material is a kind of molecular structure for the activity of active silicon material, small molecular weight, contains hydrophobic groups and hydrophilic groups at the same time, the hydrophilic outweigh the hydrophobicity, soluble in water, does not occur in the dry environment condensation crystallization phenomenon, and condensation crystallization occur in the damp environment. By active silicon, cement, and active inorganic mixture, etc. Must have the osmotic pressure. This is the capillary pressure in concrete. Solid - The liquid surface tension between the difference, the greater the formation of wetting Angle is smaller, it to the capillary internal penetration. Crystallization of active waterproof coating related to water into the depth of penetration depth. The earliest invented by American chemist hall, named KeIo ( Chloe) Condensate DPS, active material is a solid material, its waterproof effect stems mainly from its own polymerization, by the activity of small molecules in either high or low molecular aggregation into inert macromolecule, or polymer, blockage of water seepage of grassroots channel and achieving high waterproof effect, because nature is crystal in aqueous solution, there is no water in the drive, these small molecules or low molecular can only float on the polymerization reaction of basic level surface, not deep into the grassroots crystallization, so in order to make the activity of small molecules to produce a better permeability, can be fully before the construction of grass-roots wetting process, make water into small molecules as the base polymer crystallization in the depth of the defects. Thus, active material of infiltration depth is determined by into the depth of the water, the water cut at the grass-roots level more enrich its infiltration is more deep, activity of osmosis and the aqueous solution of penetrating principle is the same. Into the depth of the active material is not only related to grassroots looseness, also live with nature solution as a function of the time stay at the grass-roots level surface, grassroots is loose, living nature in long residence time of basic level surface active material infiltration depth will be deeper. Market is generally believed that active substances penetrate into the deeper at the grass-roots level, namely at the grassroots level, the more deep crystal the waterproof effect is better. In fact, that is not rigorous, anti seepage pressure is one of the most important indicator to measure the waterproof effect, but active substances penetrate into the deeper at the grass-roots level does not represent the permeability, the greater the pressure. Active substance content in permeable crystallization type waterproof material (rarely Accounts for about 4% of the total) , the quantity of crystals obviously can't satisfy the requirement of the compactness of concrete deep filling, therefore, even if the active substances penetrate deeper at the grass-roots level, also because of its defects, gap filling rate is not high and cannot enhance the permeability pressure on real significance, the higher density of concrete, the active material is very difficult to penetrate into deep inside. Under normal circumstances, permeable crystallization type waterproof material of active substances in the crystallization can be fully filled with concrete surface defects, 5 ~ 50 mm deep space, and make it become a rigid waterproof layer with good sex of permeability.