Five major inspection requirements for base construction of real stone paint and imitation stone paint

China Paint Online News Information
We all know that the building facade substrate is mostly cement mortar or concrete surface, which is characterized by many gaps, strong alkaline. One of the porous structure makes it water-absorbing, resulting in the true stone paint coating surface is not smooth enough, easy to cause the coating film wrinkle, and may lead to the coating film drying too fast and cause the paint cracking waste paint. Strong alkalineness can lead to chemical degradation of resins in coatings, accelerate film aging, reduce the life of the coating, and even whiten and re-alkali. True stone paint construction grass-roots treatment is very important, to achieve what standards? Let's see.
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True stone paint imitation stone paint construction grass-roots five testing requirements true stone paint construction grass-roots five testing requirements: 1, strength
grass-roots strength and the type of grass-roots and its own quality has a lot to do with, usually the highest concrete grass-roots strength, mortar second, the lowest gypsum board. Low grass strength can affect the adhesion of the coating. Qualified grass-roots should not drop powder, sand, no empty drum, layering, cracking and peeling phenomenon., flatness,
unevenness of the grass roots will affect the final decorative effect of real stone paint. There are four main aspects of flatness inspection: surface flat, yin and yang angle vertical, facade vertical, yin and yang angle square., dryness
the grass-roots moisture comes from mixed cement is added water, moisture will bring alkaline substances to the surface to damage the coating. The base must be thoroughly dried before painting. The water content must be less than 10%. Usually for cement mortar base, in good ventilation, 14 days in summer, 28 days in winter, water content can meet the requirements., acidity and alkalinity
mortar, lime in concrete, cement contains a large amount of calcium hydroxide has a strong alkaline. How alkaline the base will affect the bonding of the coating, but also cause the coating color change, gas layer, whitening, flowering and other quality accidents. The primary pH value should be less than 10., the degree of cleanliness
remove the surface of the grass pulp, dust, oil, etc. , so that the surface is conducive to the bonding of the coating. Grass-roots treatment is the first and basic process of true stone paint coating, which has a decisive effect on the quality of the whole coating. The grass-roots treatment is not in place, the coating will fall off, crack, flower and other quality accidents.
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