| 摘要 |
<p>1366758 Slag binders RHONE-PROGIL 6 June 1972 [14 June 1971] 26321/72 Heading C1H A binder based on blast furnace slag and containing an alkaline earth metal base is mixed with an aqueous solution containing an alkali metal silicate, a neutralized acrylic acidacrylonitrile copolymer and optionally in the case of concretes or mortars sand and/or gravel. The alkaline earth metal base (e.g. 1-15 wt. per cent of the slag) may be the hydroxide of Ba, Ca or Mg or it may be formed in situ, e.g. by adding cement clinker which liberates Ca(OH)2 with water. Particle size details for the slag and aggregate are given (e.g. silicates, calcium silicates, aluminosilicates). Examples 3-5 illustrate the preparation of compositions from calcium silicate sand, finely ground haematite slag, slaked lime, sodium silicate, copolymer and water.</p> |
