| abstract |
FIELD: construction. n SUBSTANCE: invention is related to nonfading cementing composition of building mortar, which is free from reactive siliceous material and contains the following components, wt %, as equivalent to dry mass of cementing composition of building mortar: a) from 1 to 10 of regular portland cement, b) from 1 to 30 of aluminous cement, c) from 1 to 15 wt % of calcium sulfate and d) from 0.5 to 30 of aqueous polymer dispersion or repeatedly water-dispersed polymer powder from polymers on the basis of one or several monomers from group, including vinyl esters, (meth)acrylates, vinyl aromatic compounds, olefins, 1,3-dienes and vinyl halogenides, and also, when required, other monomers that might be copolymerised with them, in which components a), b), c) and d) are contained in the mass ratio accordingly, from 1 to 1.5 : from 2 to 4 : from 1 to 1.5: from 2 to 4. Invention is also related to method for preparation of cementing composition of building mortar and its application. n EFFECT: improved tensile strength and adhesive properties. n 9 cl, 6 ex, 3 tbl |