| 摘要 |
<p>FIELD: building materials industry, more particularly concrete mixes comprising plasticizing additives. SUBSTANCE: concrete mix comprises, wt.%: portland cement, 18-22; crushed stone, 47-52; sand, 16- 26; spent beer production silica filter, 0.5-5; and water, the balance. Spent filter is kieselguhr-based filter. EFFECT: higher density and greater impermeability of concrete. 2 cl, 1 tbl</p> |
