FIELD: manufacture of building materials.
SUBSTANCE: invention relates to composition of complex additive for concretes, cement mortars, and dry mixes to improve vitality concrete mix, molding properties of concrete mixes, and to reduce corrosion of construction carcass. Additive 3-20% lignosulfonates, 40-87% fireclay, and (additionally) 10-40% clay containing montmorillonite, said fireclay being preferably kaolin clay and said montmorillonite-containing clay being bentonite clay.
EFFECT: improved functional properties of additive, increased waterproofness, frost resistance, strength of concretes and cement mortars.
3 cl, 3 tbl
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