| abstract |
FIELD: manufacture of building materials. n SUBSTANCE: invention provides plasticizing additive for binding materials such as Portland cement, lime binder, and Portland cement-lime binder, which additive contains 61-75% K 2 CrO 4 and 25-39% Fe. n EFFECT: plasticized mortar or concrete mix, accelerated curing process, increased frost resistance and waterproofness of concrete or mortar. n 1 tbl |