Experimental Study on Consolidation of Unsaturated Cohesive Soil
In this paper,the indoor consolidation test method is used to study the influence factors and influence rules of deformation of unsatu-rated clay with different saturations from the actual engineering clay under different experimental conditions.The results show that under differ-ent saturation conditions,the deformation changes regularly with the increase of saturation under the same load condition.However,when the water content is close to the plastic limit,the soil will have a certain viscous strength,which increases the drainage time of the sample,and then affects the variation law of soil consolidation settlement.Under different consolidation pressures,the greater the saturation of the soil,the smaller the instantaneous settlement under the same load;in addition,the existence of preloading can reduce the secondary consolidation coef-ficient in the later stage and reduce the consolidation settlement in the later stage.The research content of this paper provides some technical and data support for the related research work of one-dimensional consolidation theory of unsaturated cohesive soil.
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