Abstract
In order to study dynamic mechanical properties of concrete, the impact compression tests of concrete material under three different velocities are conducted using a light gas gun. Flyer and target are made of the same material, the manganin pressure gauge is used to measure the time-pressure curves of the samples. The measured time-pressure curves show that the stress peak will increase with the increase of flyer speed, and the stress peak at different locations will decrease with the increase of dissemination distance. It illustrate that concrete material has obvious rate sensitivity and energy dissipation characteristics. Then, through further analysis of the experimental data, the shock hugoniot relationship is determined, that is a linear relationship between the shock wave speed and the wave particle velocity. Based on the shock hugoniot data of the concrete, the high-pressure polynomial equation of state is fitted.
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