| abstract |
PURPOSE:To obtain a cement suspension giving a set and hardened product of extremely high strength by mixing and casting an aqueous suspension of cement, alkaline earth metal hydroxide and phosphate salt together with a specific solution containing an alkali metal aluminate. CONSTITUTION:Suspension A from cement, an alkaline earth metal hydroxide, a phosphate salt and water and suspension or solution B from alkali metal aluminate, alkali metal carbonate, an organic carboxylic acid or its salt and water are mixed to give the subject suspension composition. The alkaline earth hydroxide is, for example, magnesium hydroxide or calcium hydroxide, which is readily available. The alkali metal aluminate is, for example, potassium or sodium aluminate, because it is readily available. The amount of the organic carboxylic acid or its salt is usually 0.01 to 2wt.% based on the cement. |