In this study,three kinds of desert sand concrete with different mixing ratios were prepared by selecting Maohuusu desert sand,Sanshayuan desert sand and desert sand near Ningxia Sand Lake,and their compressive properties were investigated.The results show that with the increase of cement content,the strength and stiffness of desert sand concrete increase,and the peak strain also increases gradually;under the same ratio,the strength and stiffness of Ningxia Sand Lake desert sand concrete are relatively larger,and the peak strain and energy dissipation coefficient of Sanshayuan desert sand concrete are relatively larger;the post-peak curve of Maohuusu desert sand concrete is relatively flat,which indicates that it still has certain ductility characteristics after damage.By comparing with the three ordinary concrete constitutive models and fitting the experimental data with Origin,the constitutive model applicable to desert sand concrete is proposed.
desert sandcompressive propertiesdesert sand concretestress-strain curveconstitutive model
万方数据
维普
