COMPLEX ADDITIVE FOR CONCRETES AND MORTARS Russian patent published in 2014 - IPC C04B24/24 C04B103/32 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of construction materials, in particular to compositions of additives, used in the production of precast reinforced concrete and commercial concrete. A complex additive for concretes and mortars, includes a plasticiser and an amine organic base, with the following ratio (wt %): plasticiser - 70÷90; amine organic base - 10÷30, as the plasticiser it contains polymethylene-naphthalenesulphonate, and as the amine organic base it contains tetra-aza-adamantane or its mixture with hydroxylamine or alkanolamines. The complex additive for the concretes and construction materials can additionally contain auxiliary components of air-entraining, stabilising, and hydrophobising action, regulators of structure-formation kinetics, foam extinguishers, additives of air-removing action or mixtures of the said compounds.

EFFECT: improvement of deformation characteristics of concretes, ie reduction of creep and shrinkage with unchanged preservability and mobility of concrete mixtures, ensuring the stable strength growth.

2 cl, 2 tbl