CONCRETE MIX Russian patent published in 2004 - IPC

FIELD: manufacture of building materials and reinforced concrete articles. SUBSTANCE: concrete mix contains portland cement, sand, crushed stone, water, super-plasticizing agent C-3, silicon oxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, sodium oxide, potassium oxide, carbon and sulfur; it contains additionally manganese oxide and chromium oxide at the following 4elationship of components, mass-%: portland cement, 10.26-15.71; crushed stone, 53.66-56.59; sand, 22.32-25.89;super-plasticizing agent C- 3, 0.05-0.16; silicon oxide, 0.42-1.4; potassium oxide, 0.02-0.022; ferric oxide, 0.013-0.04; carbon, 0.013-0.04; magnesium oxide, 0.005-0.017; aluminum oxide, 0.003-0.01; calcium oxide, 0.003-0.01; sodium oxide, 0.003-0.009; sulfur, 0.0012-0.004; manganese oxide, 0.0018-0.0058; chromium oxide, 0.0001-0.0003; the remainder being water. EFFECT: enhanced strength and durability. 1 tbl, 1 ex