Experimental study on consolidation properties of two marine soft soils

To discuss consolidation properties of soft soil,we made consolidation test of the two marine mud soil samples of Zhangzhou and Dongguan.The results of creep curves ε-t show the characteristics of creep attenuation.The pressure and strain curves p-ε show apparent non-linear feature and good index relation.The coefficients of primary and secondary consolidation influenced by load ratio vary with the consolidation pressure and show stage variable characteristics.A new expression of stress-strain-time relation is suggested based on Singh-Mitchell model and using index and hyperbolic function of stress-strain and strain-time relation respectively.Compared with two models above,the subsection model suggested has a better consistency with test results.So it is suitable to describe consolidation deformation properties of two types soil and has the advantage of easiness and conveniences.