METHOD OF PREPARING PLASTICIZING ADDITIVE

摘要

FIELD: manufacture of building materials. SUBSTANCE: in a method of preparing plasticizing additive that may be used when preparing concrete mixes for cast-in- place and precast concrete construction, aqueous solution of industrial lignosulfonate is mixed with unsaturated organic acid, for instance, acrylic acid in presence of initiator, resulting mixture is warmed in a flask connected to bulb-type condenser to 60-65 C for 105-120 min, and then cooled. EFFECT: simplified production and eliminated waste formation. 1 tbl