Study on multiple impact resistance of UHMWPE fiber concrete
In order to increase the resistance to multiple impacts of the concrete shed,ultra-high molecular weight polyethylene(UHMWPE)is added into concrete.Then,UHMWPE fiber concrete with five types of fiber content was designed.Based on the tests,the effect of the fiber content on the compressive strength,flexural strength and multiple impact resistance is analyzed.Large-scale rockfall impact experiments on fiber reinforced concrete shed are conducted,and the impact resistance of concrete is analyzed.The results show that UHMWPE can improve the flexural strength of concrete and significantly enhance the multiple impact resistance of concrete.Additionally,when the content of fiber is 1.2 kg·m-3,the optimal mechanical properties of fiber concrete is obtained.Especially in the multiple impact experiments,the impact resistance of the fiber concrete is much greater than plain concrete.UHMWPE fiber can enhance the impact resistance of the rock-shed.
万方数据
维普
