The variation laws of dynamic strength

dynamic elastic modulus and damping ratio of cemented soil composite samples are studied by means of dynamic triaxial experiment.The effect of the main factors including rubber content

confining pressure and dynamic strain on dynamic characteristics was studied and the inherent mechanism was analyzed.As confining pressure is constant

dynamic strength of the cemented soil decreases with the increase of rubber content. The bigger the confining pressure is

the higher the dynamic strength becomes and the smaller the rubber content influences.The dynamic modulus increases while the damping ratio decreases with the increase of confining pressure.The dynamic modulus increases while the damping ratio decreases with the increase of rubber content.Calculation formulas for dynamic elastic modulus and damping ratio are deduced by data fitting for rubberized cemented soil at the end of this paper.Rubber powder can improve the energy absorption ability of cemented soil.So using rubber cement soil as foundation material can reduce earthquake action.