Hardening Characteristic of Decomposed Granite Treated with Cement Powder Grouting Method Using Surface-Treated Cement

Abstract

Surface-treated cement used for cement powder grouting method has excellent dispersibility and permeability in compressed air. However, the surface treatment with water-soluble resin may cause a delay in hydration of cement.In order to study the hardening characteristic of surface-treated cement, laboratory hardening tests with the disturbed decomposed granite samples and an excavation survey for decomposed granite after field injection tests have been conducted. Based on the results of these investigations, an appropriate curing method for the ground with cement powder grouting is proposed.