| 摘要 |
PROBLEM TO BE SOLVED: To obtain a water glass-based grout of an inorg. suspension type which has a low viscosity, a permeating capability, and a gel time easily adjustable in a wide range and can give a homogeneous high-strength solidification product. SOLUTION: This grout for ground injection is prepd. by incorporating at least one compd. selected from among aluminum sulfate, aluminum chloride, and aluminum polychloride together with water glass and phosphoric acid into the same. When a soln. contg. a combination of phosphoric acid with at least one compd. selected from among aluminum sulfate, aluminum chloride, and aluminum polychloride is reacted with water glass, water glass reacts with phosphoric acid first and then with aluminum sulfate, aluminum chloride, or aluminum polychloride, forming a completely emulsified colloidal soln. having a low-viscosity and thus causing water glass to gel. |
