| 摘要 |
PROBLEM TO BE SOLVED: To provide a grout injection method capable of surely gelling injected grout and preventing the appearance of a future water channel in the case of injecting a slow-setting grout (chemical liquid) formed mainly of acid silica sol, with a sandy soil layer containing a cohesive soil layer, a gravel layer, a shell layer, etc. as a target.SOLUTION: In a grout injection method for injecting a slow-setting grout containing acid silica sol into a subgrade 1, the slow-setting grout containing acid silica sol is injected into the subgrade 1 after water containing salt is injected into the subgrade 1 in advance. |
