| 摘要 |
1347428 Concrete MARTIN MARIETTA CORP 23 May 1972 [10 June 1971] 24224/72 Heading C1H Concrete compositions comprise Portland cement, aggregate, water and inositol. The inositol may form 0À005-0À75 wt. per cent of the cement. Accelerators (e.g. CaCl 2 and/or triethanolamine), can be present and also other retarders, e.g. glucosaccharides, sugars and lignosulphonates. Fly ash, pezzelanas and colourants are optional. |
