In the present study, reactive powder concrete (RPC) was investigated with three different types of single fibers that is, steel fiber (SF), glass fiber (GF), and carbon fiber (CF). Moreover, the effect of hybrid SF‐GF, GF‐CF, and CF‐SF on RPC was also investigated. In case of both single and hybrid fiber‐reinforced RPCs, a constant volume fraction of 2% fiber was used. A plain RPC was also produced that served as a reference/control mix. Studied parameters include compressive strength, modulus of elasticity, peak strains in compression, compression toughness, total energy absorbed in compression, splitting tensile strength, and flexural strength. Results showed that among single fiber‐reinforced RPCs, CF‐RPC performed better than both SF‐ and GF‐RPC in compression. Whereas, single SF‐RPC performed better than GF‐ and CF‐RPC in splitting tensile and flexural strength, single SF‐RPC showed significant softening response compared with single CF and GF‐RPC. CF‐RPC showed comparable performance to that of the SF‐RPC in both tensile and flexural strength. But CF‐RPC showed lower toughness than SF‐RPC. Hybridization of 1%SF and 1%CF yielded maximum overall mechanical performance among both single and hybrid fiber RPCs. Maximum attribution (17–38%) of fibers was toward flexural strength compared to other strength properties.

中文翻译：

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不同纤维（钢纤维，玻璃纤维和碳纤维）对活性粉末混凝土力学性能的影响

在本研究中，研究了活性粉末混凝土（RPC）与三种不同类型的单纤维，即钢纤维（SF），玻璃纤维（GF）和碳纤维（CF）。此外，还研究了混合SF-GF，GF-CF和CF-SF对RPC的影响。对于单纤维增强型和混合纤维增强型RPC，均使用体积分数恒定为2％的纤维。还制作了纯RPC，用作参考/控件组合。研究的参数包括抗压强度，弹性模量，压缩时的峰值应变，压缩韧性，压缩时吸收的总能量，抗张强度和抗弯强度。结果表明，在单纤维增强的RPC中，CF-RPC在压缩方面的性能优于SF和GF-RPC。然而，SF-RPC在拉伸强度和弯曲强度方面的表现要好于GF和CF-RPC，SF-RPC与CF和GF-RPC相比表现出显着的软化响应。CF-RPC在抗张强度和抗弯强度方面均表现出与SF-RPC相当的性能。但是CF‐RPC的韧性比SF‐RPC低。1％SF和1％CF的杂交在单纤维RPC和混合RPC中产生了最大的总体机械性能。与其他强度特性相比，纤维的最大归属（17-38％）是抗弯强度。1％SF和1％CF的杂交在单纤维RPC和混合RPC中产生了最大的总体机械性能。与其他强度特性相比，纤维的最大归属（17-38％）是抗弯强度。1％SF和1％CF的杂交在单纤维RPC和混合RPC中产生了最大的总体机械性能。与其他强度特性相比，纤维的最大归属（17-38％）是抗弯强度。