ABSTRACT
Compaction grouting is a highly versatile ground improvement technique used to enhance soil load-bearing capacity and mitigate settlement in weak deposits. This method involves injecting a stiff, low-mobility mortar under high pressure, displacing and densifying surrounding soil, thereby improving its mechanical properties. It is widely applied in infrastructure projects such as metro systems, building foundations, and industrial facilities, ensuring long-term stability and performance. In India, it is particularly effective in seismic regions for mitigating liquefaction risks. The present study explores the principles, methodologies, and advantages of compaction grouting as ground improvement. Several case studies from infrastructure projects illustrate its effectiveness across diverse geological conditions. The paper highlights its role in soil arching, reducing differential settlements, mitigating risks of liquefaction, and strengthening existing foundations. Findings confirm that compaction grouting significantly enhances foundation performance and overall project stability, making it an essential technique for modern infrastructure development in challenging soil conditions.
