| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to construction materials and can be used to make concrete articles in civil and industrial construction, as well as during erection of special purpose structures. High-strength concrete prepared from mixture containing Portland cement, sand, crushed rock, water and complex additive, according to invention as sand, contains sand with fineness modulus of 2.1; crushed rock is chips with fraction of 5-10 mm, and complex additive is additive consisting of liquid sodium glass with density of 1.45 g/cm, and superplasticiser additive "Polyplast-3MB" in following proportions, wt%: 17.50-18.00 and 82.00-82.50 respectively with following ratio of components, wt. %: Portland cement 19.95-26.85; sand 21.80-24.70; crushed rock 42.40-44.50; said additive 2.25-2.75; water 6.70-8.10.EFFECT: technical result is increase in compression strength of concrete.1 cl, 1 tbl |
