This Geotechnical Engineering Research Study is prepared to cover the most recent design approaches of highway embankments over soft soils. We feel that there is a need for a more detailed study for advanced construction methods on chemically improved soils to avoid excessive failures of engineering facilities. Mass stabilization of soft clay by mixing with cement is a relatively new ground improvement method for soft clay soil layers. Soft clay generally have low strength. The reduction in strength and stiffness of soft clays causes bearing capacity failure and excessive settlement. These...