Experimental Study on Uniaxial Compression Behavior of Concrete Under Dynamic Loading

A systematic experimental investigation was carried out on dynamic mechanical behaviors of concrete material subjected to uniaxial compression.The cylindrical specimens were tested with a hydraulic test machine named MTS Model 815.04 Rock and Concrete Mechanics Testing System.In the controlled condition of the displacement and the strain-rate,the dynamic fully stress-strain curves were obtained with five different loading rates.The difference of the failure modes between static loading condition and the dynamic loading conditions is also discussed.Strain-rate effects on the compressive strength,the peak strain,the elastic modulus and the fully stress-strain curves were investigated based on the experimental results.The study results reveal the nonlinear property of concrete material under uniaxial dynamic compression loading and provid a test basis for an understanding of the physical mechanisms during dynamic loading.