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Polymer and steel fiber-reinforced cementitious composites under impact loading-part 2: flexural toughness

机译:冲击载荷下的聚合物和钢纤维增强水泥基复合材料-第2部分:弯曲韧性

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摘要

In Part 1 of this paper, single-fiber pullout tests were described, and the bond-slip responses under impact loading were reported. Four different fiber types, including one straight polyolefin fiber, Two lengths of a sinusoidally deformed polypropylene fiber, and a Steel fiber with flattened ends, were investigated. It was found that The performance of a fiber depended largely on its failure mode, And in some instances under impact, a change in the fiber pullout Mode form a complete pullout to a brittle fiber fracture occurred. If A pullout ode of fiber failure could be maintained for a deformed Polymeric fiber, however, its energy dissipation capacity under Impact loading could, in fact, approach that of steel fibers.
机译:在本文的第1部分中,描述了单纤维拉拔试验,并报道了冲击载荷下的粘结滑动响应。研究了四种不同的纤维类型,包括一根直的聚烯烃纤维,两根正弦形变的聚丙烯纤维和两端扁平的钢纤维。已经发现,纤维的性能在很大程度上取决于其失效模式,并且在某些情况下,在受到冲击的情况下,纤维拔出模式的改变形成了对脆性纤维断裂的完全拔出。但是,如果变形的聚合物纤维能够保持纤维失效的拉力,那么其在冲击载荷下的能量耗散能力实际上可以接近钢纤维。

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