Experimental study on static and dynamic properties of cemented sand and gravel

The static and dynamic triaxial shear tests and deformation tests on CSG (cemented sand and gravel) with different amounts of added cementing materials are performed. The mechanical indexes and parameters obviously increase with mixing of cementing materials and accumulation of curing days. However, the increase will become mild with further adding of the cementing materials. The deformation curve of CSG test sample is similar to that of sand-gravel sample without mixing with any cementing materials, and they both follow the trend of semi-logarithmic attenuation law. The dynamic permanent deformation of CSG increases with the increase of confining pressure, consolidation stress and dynamic stress. Thus this deformation still can be calculated using the constitutive model for dynamic residual deformation proposed by Shen Zhujiang.