Dynamic Stress-Strain Characteristics of Composite Ferronickel Slag Powder Cement Soil
To study the influences of composite ferronickel slag powder on the dynamic mechanical properties of cement soil,the Split Hopkinson Pressure Bar(SHPB)test was carried out under different soil quality,composite ferronickel slag powder content,and curing age.The results showed that adding the proper amount of composite ferronickel slag powder could improve the dynamic strength of cement soil,with an optimum adding content of 40%.The composite ferronickel slag powder did not improve the ductility of cement soil,and the failure process of cement soil could be divided into approximate elastic stage,brittle deformation stage,and brittle failure stage.As the curing time increased,the dynamic stress and dynamic stress peak of composite ferronickel slag powder cement soil with different content and soil quality were increased.