**1. Introduction**

The increasing need of construction areas for infrastructure facilities like roads, rails, etc. that spread over large spaces confines the choice of neglecting those locations where poor soil is available. This open the scope of strengthening the available soil by using some ground improvement method. Ground improvement methods address many ground conditions problem and help in modifying the engineering aspects of available soils as per the requirements. These techniques also help in obtaining economical and environmental friendly solutions to mitigate the issues related to soil for construction purpose. Some basic ground improvement techniques including densification, dewatering and use of admixtures and reinforcement are being adopted from ancient times.
