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研究不同钢纤维体积掺量(0%,1%,2%)及不同冲击速度对全轻混凝土棱柱体抗冲击性能的影响,通过测试试件的冲击力峰值、应力峰值、冲击力作用时间和最终破坏形态,综合评价钢纤维全轻混凝土棱柱体的抗冲击性能。试验结果表明:随着冲击速度的增加,试件的冲击力峰值、应力峰值呈增加趋势,冲击力持续时间则减小。同时获取了试件的破坏形态和破坏过程的高速影像,试件的破坏形态主要呈径向劈裂。
The influence of volume fraction of steel fiber (0%, 1%, 2%) and different impact velocity on the impact resistance of all light concrete prism was studied. Through testing the impact peak, the peak stress, the impact time and The final destruction of morphology, a comprehensive evaluation of steel fiber light concrete prism impact resistance. The experimental results show that with the increase of impact velocity, the peak value of impact force, the peak value of stress increase and the duration of impact force decreases. At the same time, the destructive morphology of the specimen and the high-speed image of the destructive process were obtained. The failure morphology of the specimen mainly showed radial cleavage.