ADDITIVE TO CONCRETE MIX Russian patent published in 1999 - IPC

FIELD: manufacture of heavy, lighter and light concretes and preparation of solutions, more particularly manufacture of concrete and reinforced concrete products at subzero temperatures. SUBSTANCE: concrete mix additive comprises, wt %: after-yeast vinasse, 92-94; finally milled ceramic brick modifier, 3- 4; Al₂(SO₄)₃, 3-4. Modifier grain size is not greater than 1 mm and content of dry matter in after-yeast vinasse is at least 3.5 wt %, and pH is 5.5. EFFECT: additive serviceable at tow temperature of minus 35 C, greater strength in early and.