| 摘要 |
FIELD: mining. ^ SUBSTANCE: composition includes filler, Portland cement, adhesive and water. As filler there used is foundry waste - waste moulding sand, adhesive - mixture of liquid glass and liquid aluminium sulphate, at the following component ratio, wt %: waste moulding sand 82.5-87; Portland cement 5.0-8.2; adhesive (mixture of liquid glass and liquid aluminium sulphate) 2-0.5; water - the rest. ^ EFFECT: increasing physical and mechanical properties, reducing water saturation of materials at the ambient temperature variation. ^ 1 tbl |
