| 摘要 |
PURPOSE:To obtain a chemical for grouting into the ground capable of providing a high strength for a long gelation time and a grouting material excellent in permeability by mixing a specific alkali metallic aluminate solution as the grouting material with a silica compound and a polyvalent metallic compound. CONSTITUTION:The objective chemical is obtained by mixing (A) a solution of an alkali metallic aluminate such as sodium aluminate so as to provide >=2.8 value of [Me2O]/[Al2O3] (Me is alkali metal; [Me2O] is total mol concentration of Me2O in the alkali metallic aluminate solution and the silica compound; [Al2O3] is the mol concentration of Al2O3 in the alkali metallic aluminate solution) with (B) a silica compound such as water glass or silica fume and (C) a polyvalent metallic compound such as calcium carbonate or iron alum. |
