Abstract

The research work is conducted to investigate the influence on the dynamic mechanical properties of concrete with different volume content of basalt fibers and the different layers number of basalt fabrics, as well as the hybrid effect between fibers and fabrics. The relationships among the impact force, impact time, displacement of the specimens and their failure patterns were analyzed. The results showed that the basalt fabric could significantly improve the brittleness and the impact resistance of concrete. Moreover, the impact force and energy absorption of the specimens increased continuously with the increase of impact energy. The fabrics could play the vital roles in transmitting stress, absorbing energy and bearing load. Basalt fiber could enhance the impact resistance of concrete but it was not obvious. Finally, the different reinforcement mechanisms of basalt fiber and basalt fabric under impact load were proposed.

摘要

研究工作旨在研究不同玄武岩纤维体积含量和不同玄武岩织物层数对混凝土动态力学性能的影响，以及纤维与织物的混合效应。分析了冲击力、冲击时间、试样位移及其破坏模式之间的关系。结果表明，玄武岩织物能显着提高混凝土的脆性和抗冲击性能。此外，试样的冲击力和能量吸收随着冲击能量的增加而不断增加。织物在传递应力、吸收能量和承受载荷方面起着至关重要的作用。玄武岩纤维可以提高混凝土的抗冲击性，但效果不明显。最后，