The Experimental Research on Dynamic Compressive Mechanical Properties of Damaged LimestoneZHU Wen-hua,LI Yuan-zhang(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China)The high strain-rate testing on limestone damaged and original limestone was made by Hopkinson pressure bar with improvement method to avoid the influence of the widthways inertia effect.Experimental research on dynamic compressive mechanics properties of original and damaged limestone was carried out.The testing results show that the limestone material is a material of both strain rate hardening effect and damage soften effect apparently,and the limit dynamic compressive stress of original limestone is more than the damage limestone 30%.limestone;Hopkinson pressure bar;strain-rate effect;damage effect