CONCRETE MIXTURE AND ADDITIVE "LIGNOPANE B-5" FOR CONCRETE MIXTURE Russian patent published in 2005 - IPC

FIELD: concrete composition, cement modified with additive and additive for concrete mixture.

SUBSTANCE: claimed additive contains (mass parts): Lignopane with molecular weight of 10-50 kDa 78-82; silicone waterproofing agent (antifoaming additive 139-282) 0.4-0.5; and additionally sodium carbonate 3-5; sodium sulfate 3-5; nitriletrimethyl phosphonic acid 5-10; superplasticizer 0-10. Additive content is 0.15-0.8 % calculated as cement mass. Concrete mixture may comprise (kg/m³) cement 300-500; filler 1590-2030; water 105-190; coarse filler (chip and/or gravel of grade 5-20 mm or 5-40 mm) and/or fine filler (sand of fineness not more than 5 mm). As fine filler at least one component selected from group containing quartz sand, sand from igneous formation, sand from metamorphic formation, haydite sand, and sand from blast-furnace dross is used. As coarse filler at least one component selected from group containing chip from igneous formation, chip from metamorphic formation, chip from sediment, chip from blast-furnace dross, etc. is used. Composition of present invention is useful in building industry for production of monolith and precast concrete and reinforced concrete construction, etc.

EFFECT: concrete mixture of high flow storability.

9 cl, 2 tbl