Abstract
The gaining effect of fibers with different scales on the crack resistance of concrete is different. Microscale fibers play an essential role in preventing cracking, while macro scale fibers mainly produce crack prevention effects during crack propagation. This paper aims to investigate the flexural static and fatigue performances of high-content hybrid fiber-polymer concrete (HCHFPC). The results show that the microstructure of HCHFPC is more compact than plain concrete (P.C.), the micro-cracks and holes are significantly reduced, and the flexural strength is about three times that of P.C. Through the test of the three-parameter Weibull distribution function, it was found that there is a good correlation between the fatigue life of each specimen. Based on this, a fatigue life prediction model with different failure probability (PSN) is established. Finally, by comparing the flexural fatigue performance of mainstream high-performance concrete, it is confirmed that HCHFPC has high toughness and flexural fatigue durability.
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