The strain rate effect on the tensile behavior of high performance hybrid fiber reinforced cementitious composites was evaluated according to the blending ratio of hooked steel fiber (HSF) and polyvinyl alcohol fiber (PVA). The tensile strength, strain capacity, peak toughness, and softening toughness were investigated. In the experimental result, specimen with 1.5 vol% HSF and 0.5 vol% PVA (HSF1.5PVA0.5) exhibited the highest tensile strength and softening toughness. However, the strain capacity and peak toughness were less than those of the specimen with 2.0 vol% HSF (HSF2.0). Nevertheless, HSF1.5PVA0.5 exhibited the highest dynamic increase factors (DIFs) for the tensile strength, strain capacity, and softening toughness. HSF2.0 showed a higher DIF for the peak toughness than HSF1.5PVA0.5. But HSF1.5PVA0.5 is expected to exhibit a higher DIF for the peak toughness than HSF2.0 at high strain rates (>10¹ s⁻¹), because it have highest strain rate sensitivity of tensile strength and strain capacity.

根据钩钢纤维（HSF）和聚乙烯醇纤维（PVA）的混合比，评估了应变速率对高性能混杂纤维增强水泥基复合材料拉伸性能的影响。研究了拉伸强度，应变能力，峰值韧性和软化韧性。在实验结果中，HSF为1.5体积％，PVA为0.5体积％（HSF1.5PVA0.5）的样品表现出最高的拉伸强度和软化韧性。但是，其应变能力和峰值韧性低于具有2.0％（体积）HSF（HSF2.0）的样品。但是，HSF1.5PVA0.5在拉伸强度，应变能力和软化韧性方面表现出最高的动态增加因子（DIF）。HSF2.0的峰值韧性比HSF1.5PVA0.5更高。但是HSF1.5PVA0。¹ s ^-1），因为它具有最高的拉伸强度和应变能力的应变率敏感性。