CONCRETE MIX Russian patent published in 2002 - IPC

FIELD: coarse-sized concrete mix compositions, more particularly manufacture of concrete and reinforced concrete products subjected to alternating strains. SUBSTANCE: concrete mix comprises cement, crushed stone, sand, water and damping additive such as carbonate slime which is product resulting from purification of sewage from metallurgical enterprises in degreasing, anodizing and pickling varnished aluminium tape, ratios of components being as follows, wt %: cement, 10-10.9; crushed stone, 63.6; sand, 18.2; carbonate slime, 0.3-1.2; and water, 7. EFFECT: improved greater tensile strength crack and frost, resistance, reduced manufacturing cost thereof. 3 tbl