Experimental study on shear strength of cement improved soil
To obtain design parameters for the shear strength of cement improved soil in a wetland environment,an indoor experimental method is employed to study the effects of the cement-to-soil mass ratio,compaction degree,moisture content,and curing age on the shear strength of cement improved soil.The results indicate that,with the same moisture content,compaction degree,and curing age,the cohesion,internal friction angle,and shear strength of the cement improved soil increase with the increase of the cement-to-soil mass ratio.When the cement-to-soil mass ratio,moisture content,and curing age remain constant,the cohesion,internal friction angle,and shear strength of the cement improved soil increase linearly with the increase of compaction degree.At a cement-to-soil mass ratio of 8.0％,the average cohesion increases by 3.4％,and at a cement-to-soil mass ratio of 10％,the average cohesion increases by 2.1％.With the cement-to-soil mass ratio,compaction degree,and curing age remaining constant,the cohesion,internal friction angle,and shear strength of the cement improved soil decrease with the increase of moisture content.The change in cohesion is small,while the changes in internal friction angle and shear strength are significant.When the cement-to-soil mass ratio,compaction degree,and moisture content are constant,the cohesion,internal friction angle,and shear strength of the cement-modified soil increase with the increase of curing age,but the rate of increase slows down.After 28 days of curing,the internal friction angle remains basically unchanged,while the shear strength increases due to the continued increase in cohesion.
improved soilshear strengthcement-to-soil mass ratiocompaction degreewater contentcuring age
万方数据
维普
