FIELD: chemistry.
SUBSTANCE: present invention relates to aqueous compositions of polymer-modified setting agents, production method thereof, as well as aqueous concrete mixtures containing aqueous compositions of polymer-modified setting agents, a method of preparing said concrete mixtures and use thereof, for example, in building construction, mine construction or tunnel construction. The technical result is higher strength of concrete with said modified setting agents during early hardening stages. The aqueous compositions of polymer-modified setting agents contain one or more setting agents and one or more cation-stabilised polymers containing one or more polymers based on ethylenically unsaturated monomers and one or more cation-active protective colloids. In the method of preparing aqueous compositions of said polymer-modified setting agents, one or more setting agents and one or more cation-stabilised polymers are mixed with each other in the presence of water. Aqueous concrete mixtures containing cement, aggregates, as well as optional additives, contain said aqueous composition of polymer-modified setting agents. In the method of preparing said aqueous concrete mixture by mixing cement, aggregates and optionally other additives, at least one aqueous composition of polymer-modified setting agents is added. In the method of making a concrete composite structure, said aqueous concrete mixtures are deposited into one layer or several layers stacked one on top of the other, between which or in which structural elements are embedded if necessary. The invention is developed in subclaims.
EFFECT: invention is used in reinforcing slopes and rock material, for constructing mines, pits, tunnels, buildings, wells, driveways, bridges or foundation slabs or for filling sealing joints, cracks and pores in surfaces.
10 cl, 3 ex, 2 tbl
