Abstract: The mechanical characteristics of the stabilized soil is studied based on soft dredger fill which is stabilized by the CJDS07 agent in Tianjin new area. The results showed that the compression modulus、shear strength、structure of the stabilized is increased with the increasing of the curing age, and the compressibility of the stabilized soil is from high to middle. The stress strain relationship of the stabilized soil is highly influenced by the confining pressure, when it is smaller than some value，the relationship is tend to be strain softening, while it is strain hardening reversely. Based on the above research results and Dun-Chang model, the stress-strain relationship model suitable for the stabilized dredger fill is established.

Key words: solidified soil, compression characteristic, shear strength characteristic, stress-strain relationship