Materials of reclaiming land is one of the main factors effecting on consolidation efficiency which can be decreased by fine particles. The characteristics of the granule and mineral compositions

physical and chemical properties of dredger fills from various coastal areas were obtained by experiments. It was shown that the dredger fill from the Daya Bay engineering field is similar to that from other areas

which have many fine particles in compositions. The Daya Bay dredger fill is characterized by high plastic index

high cation exchange capacity (CEC)

and high organic matter content. Furthermore

it was concluded that the Daya Bay dredger fill is one kind of high liquid clay with the same as that in some other high clay content areas. Besides these

minerals in different dredger fills were not obviously different due to the complex environment of sediment distribution in bay areas. The cementation effect of the fills with high content of sodium and chloride ions in various coastal areas results in unstable chemical and physical properties of the soils.