| 摘要 |
PROBLEM TO BE SOLVED: To provide a grouting capable of obtaining a grout which is easy to adjust the gelling time and, in addition, has excellent properties such as acceleration of gelling, (i.e., shortening of gelling time) and increase of consolidation strength. SOLUTION: In the infiltrating flash setting grouting by adding an acidic reactant to water glass to gelatinize the water glass in an alkaline region, a water glass solution having gelling capacity containing about 2.5-20 kg, per 1 m3 water glass, calcium hydroxide fine particles having an average particle diameter of not larger than about 8μm as liquid A and sulfuric acid as liquid B are combined and mixed at the tip of an injection tube to prepare an infiltrating grout having an adjusted gelling time of about not more than 20 seconds which is then grouted into ground. |
