DRY MIXTURE FOR PREPARING PLASTER ON AERATED CONCRETE Russian patent published in 2002 - IPC

FIELD: building materials; applicable for preparation of plaster. SUBSTANCE: dry mixture for preparing plaster on aerated concrete includes a binding, silicon oxide and polyvinylacetate. The binding is used in the form of lime-cement binding, and silicon oxide, in the form of sand with particles size up to 1.25 mm. Fraction weight is up to 0.5 mm, and it composes from 50 to 70% of sand weight. The dry mixture additionally contains cellulose ether and sodium soaps of resin acids. Ratio of components is as follows, wt. %: lime-cement binding, 30-38; sand, 60-70; polyvinylacetate, 0.6-1.1; cellulose ether, 0.9-1.6; sodium soaps of resin acids, 0-0.2. EFFECT: increased water- retaining ability and convenient placement. 1 tbl