Cement-based permeable crystalline waterproof coating is a gray powdery material prepared with ordinary Portland cement as the base material and mixed with active chemical components. Cement-based permeable crystalline series waterproof coatings, its waterproof mechanism is mainly based on the use of porosity, under the action of water, the waterproof coating contains active chemical substances, with water as the carrier, as the water penetrates the structural pores, the active chemical substances As water penetrates into the interior and reacts to form insoluble crystals such as ettringite, its active chemical substance reacts with unhydrated cement particles to promote cement hydration, forming cement hydration crystals, and generating a large amount of crystal filling. Seal the pores so that water cannot enter the concrete, so as to achieve the purpose of waterproofing.
Cement-based penetrating crystalline series waterproof coatings have good adhesion, no matter it is the light base surface and the wool base surface, the back water surface and the water facing surface, the dry base surface and the wet base surface, or the water control base surface, the construction effect will not be affected.

Widely used in tunnels, dams, reservoirs, power stations, nuclear power plants, cooling towers, underground railways, overpasses, bridges, underground diaphragm walls, airport runways, pile foundations, wastewater treatment pools, reservoirs, industrial and civil building basements, Waterproof construction of roofs, toilets and baths, and repair and plugging of all concrete structural defects such as concrete building facilities.

1. Scrape method
Clean up the debris and floating mud mortar on the waterproof coating base surface, and repair the severely uneven concrete base surface.
Remove the oil and debris on the waterproof surface of the cement-based concrete structure, and then wash it with clean water, and apply the waterproof material on the wet base surface.
If there is a serious leakage on the base surface, it should be constructed with plugging materials before using this material to ensure the quality of the project.
The water-cement ratio is 0.3-0.4:1, the dosage is 1.4-1.7kg/m2, and the thickness is 1.0mm (t0.05mm) as the standard.
2. Roll coating method
Roll the material evenly with a roller brush at the amount of 1.4-1.7kg/m2 on the treated base surface.
3. Dry spreading method
Construction will be carried out immediately after the concrete is poured and compacted, rolled and leveled. Sprinkle it evenly on the surface of the concrete according to the prescribed amount, compact it and polish it in time, check whether there is any bad construction site and repair it in time; in the case of exposure, it should be maintained with western water. Pay attention to the spray evenly and do not cut corners.