| 摘要 |
FIELD: construction. ^ SUBSTANCE: invention is related to construction materials and may be used as additive for concretes and construction mortars. Additive for concrete mixture contains wt %: after-yeast stillage with content of dry substances - 4.0-5.0 wt %, pH-5.0-6.0, density - 1.016 g/cm3 73.80-76.20, sodium fluoride 0.30-0.50, manganese dioxide 0.70-0.90, calcium hydroxide 0.70-0.90, microsilica with S"â"=2,000 m2/kg 22.10-23.90. ^ EFFECT: reduced water absorption, lower abradability and increased impact strength of concrete or construction mortar. ^ 1 tbl |
