Indoor Experimental Study on Mechanical Properties of Cement-soil Mixing Pile

Based on the soft ground improvement in Jiangyin railway project in Fuzhou,the indoor experiments are conducted systematically by orthogonal design method for the purpose of study,through which the relation between three factors,including the cement content,curing age and confining pressure of the cement-soil,and the uniaxial compression strength and Young's modulus could be obtained.As a result of the comparison between the significance evaluation indices of each factors and the critical value,F0.01、F0.05 and F0.10 thereof,we know that the cement content and the curing age influence the uniaxial compression strength and Young's modulus of cement-soil significantly,whereas the effect of the confining pressure is little.