the Plaster layer is put on house or building walls. The water, knitting substances and fillers are necessary for drawing up of a plaster solution. .
Knitting substances concern: cement, clay, plaster, liquid glass, slaked izvest, polivinilatsetatnye dispersions and magnezialnye the knitting. More often for solution preparation cement is used. Fillers happen natural (sand, gravel, a stone crumb) and artificial (fuel slag, sawdust, keramzitovyj sand). Is better for solution preparation river sand, the purest approaches. Other kinds of sand can contain various impurity of clay and then before their use it is necessary to wash out carefully. .
Sand depending on size of grains shares on: small (to 0,5 mm), average (from 0,5 to 2 mm) and large (from 2 to 7 mm). .