Abstract: Cohesive soil is one of common soil type in the coastal and southern part of China. Although cohesive soil has low bearing capacity and difficulties in compaction comparing those of cohesionless soils, it is still widely used in the engineering projects. The optimum dry density throughout the compaction is the key for a successful project. This paper discusses the relationships between the maximum dry density and the index properties of cohesive soils.

Key words: Cohesive soil , Maximum Dry Density, Compaction；Soil Parameters