| 摘要 |
PURPOSE:To lower the viscosity of a hydraulic cement milk to thereby shorten its injection time for forming cemented soil or sand of a desired diameter by adding a specified amount of an activator to a hydraulic cement milk containing a lignosulfonic acid admixture and injecting the resulting mixture into ground. CONSTITUTION:The grouting work comprises pouring a hydraulic cement milk containing a lignosulfonic acid admixture into ground and curing it to form cemented soil or sand in such a manner that the cement milk and 0.05-50 pts.wt., per 100 pts.wt. admixture, at least one member selected from among activators are injected into ground under a pressure of 30-1000kg/cm<2>. Examples of the activators include lower alcohols, organic polar compounds, mineral oils and silicone resins. |
