水泥土改良土动力特性试验研究

he dynamic modulus, the dynamic damping and the dynamic distortion are investigated according to the data obtained by dynamic triaxial tests under different condition such as confining pressure, cement(lime) ratio and age. The research indicates:On the same confining pressure, the dynamic stress have a great influence to the strain of cemented silt or limed silt. They both have \"critical stress\", when the dynamic stress is less than the critical stress, the strain increases slowly with an increase of the vibrant times; When the dynamic stress is greater than the critical stress, the strain increases with an increase of the vibrant times, and the speed grows gradually, when the times increase to a certain number, the strain of cemented silt and limed silt increases suddenly until the damage; Under the case of that other conditions are same, maximum dynamic elastic modulus increase with an increase of confining pressure, ofcement(lime) ratio, age.