| 摘要 |
PURPOSE:To obtain a chemical raw material for grouting into ground, excellent in solidifying strength and extremely excellent in permeability in spite of suspen sion type by using a mixed liquid of water glass and an alkaline earth metal of carbonate as a raw material and adding aluminic acid metallic salt to the raw material. CONSTITUTION:The objective chemical raw material having permeability extremely excellent as a suspension type grout is obtained by adding and blending an alkali metallic salt of aluminic acid such as sodium aluminate with a mixed system consisting of an alkaline earth metal salt of carbonic acid (preferably calicium carbonate or magnesium carbonate) and water glass. Furthermore, as the blend amount of these raw materials, preferably [AeCO3]/[Me2O]=0.2-1.0 is satisfied {Ae is alkaline earth metal; [AeCO3] is molar concentration of alkaline earth metal salt of carbonic acid; Me is sodium or potassium; [Me2O] is molar concentration of sodium oxide or potassium oxide}. |
