Compaction grouting (CPG) also known as static compaction is relatively a new ground improvement technique against liquefaction. In this technique, a stiff mortar is injected under high pressure that displaces and compacts the surrounding soil. Since 1990, CPG has been implemented successfully in many projects throughout the world with ground improvement as the major objective. This paper presents a laboratory experimental study to quantify the impact of CPG in liquefaction resistance. Design charts are obtained in terms of the liquefaction resistance parameters of CPG due to its densification, confining and combined densification and confining effects, and for different initial ground conditions.
compaction grouting, Density, Earth Pressure, Ground Improvement, Liquefaction