Laboratory Study on Lime and Cement Treated Marine Clay Subgrade Flexible Pavements

With the increase in population and the reduction of available land, more and more construction of buildings and other civil engineering structures have to be carried out on weak or soft soils.Owing to such soils of poor shear strength and high compressibility, a great diversity of ground improvement techniques such as soil stabilization and reinforcement are employed to improve mechanical behavior of soils, thereby enhancing the reliability of construction.As a good stabilizing agents, lime and cement are extensively applied in soil stabilization of foundation soils or road subgrades.However, lime+cement treated soil can be used for subgrade as an alternative to the traditional "remove and replace" strategies commonly utilized and is found to be satisfactory in the laboratory evaluation.Hence the author has added an optimum content of lime and cement to marine clay and further used the treated marine clay as subgrade over laid by different alternative subbases to study the performance of treated marine clay under cyclic load conditions.