| 摘要 |
PROBLEM TO BE SOLVED: To provide a soil improvement material having a high concentration of silica concentration, in order to enhance the soil strengthening power and in order to improve the soil improvement performance.SOLUTION: This chemical solution 1 comprises an acidic silica sol solution 6 having a silica concentration of 13(w/v)% or more and 15(w/v)% or less, obtained by incorporating water 3 into water-glass 2 having a mole ratio ([SiO]/[NaO]) of 3.6 or more and 3.8 or less to produce diluted water-glass 4, and mixing and agitating the diluted water-glass 4 and acid 5.SELECTED DRAWING: Figure 1 |
