| 摘要 |
building materials industry. SUBSTANCE: binding agent comprises, wt. %: Portland cement, 85-95; crushed glass with specific surface of 1000-2000 sq.cm/g, 2.5-7.5; of 3000-3500 sq. cm/g, 1.24-3.75; 4000-4500 sq.cm/g, 1.25-3.75. EFFECT: improved strength and frost resistance. 2 tbl |
