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利用内径 57mm的一级气体炮 ,对直径 50 mm厚度 1 0 mm的高强混凝土 (HSC)及 3%的钢纤维高强混凝土 (SFRHSC)试件进行平板撞击实验 ,通过锰铜计测试试件中应力波波形 ,分析应力波传播速度 ,得到了材料在应变率约 1 0 5s-1、压力 0 .65GPa～ 2 .3GPa下的冲击绝热关系 ,结合现有试验 ,给出 HSC及SFRHSC的状态方程。
Using a one-shot gas gun with an inner diameter of 57mm, a slab impact test was carried out on a high-strength concrete (HSC) with a diameter of 50 mm and a steel fiber reinforced high-strength concrete (SFRHSC) with a diameter of 3 mm. The stress The waveform of the stress wave was analyzed. The impact adiabatic relationship of the material at a strain rate of about 105s-1 and a pressure of 0.65GPa-2.3GPa was obtained. The state equations of HSC and SFRHSC were given in combination with the existing experiments.