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首页> 外文期刊>E3S Web of Conferences >Experimental Study on Dynamic Splitting Tensile Failure Mode of Carbon Nanofibers Reinforced Concrete
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Experimental Study on Dynamic Splitting Tensile Failure Mode of Carbon Nanofibers Reinforced Concrete

机译：碳纳米纤维混凝土碳纳米纤维动态分裂拉伸破坏模式的实验研究

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Carbon nanofibers (CNFs) were used as admixtures to modify traditional concrete, and carbon nanofibers reinforced concrete (CNFC) with fiber volume fraction of 0%, 0.1%, 0.2%, 0.3% and 0.5% were prepared. The dynamic splitting tensile tests of concrete with different fiber volume contents under five loading rates were carried out by using the Φ 100 mm split Hopkinson pressure bar (SHPB) test device. Based on the observation and analysis of the failure modes of the specimens, combined with the energy change rate of incident wave, the failure characteristics of CNFC under dynamic splitting tensile load are expounded. The results show that: the addition of CNFs has a certain inhibition effect on the dynamic splitting tensile failure of concrete; the failure modes of the specimens are the central failure along the loading direction; with the increase of the energy change rate of incident wave, the damage degree of the specimen is gradually aggravated.
机译：用碳纳米纤维（CNFS）用作改性传统混凝土的混合物和碳纳米纤维增强混凝土（CNFC），纤维体积分数为0％，制备0.1％，0.2％，0.3％和0.5％。通过使用φ100mm分离霍普金森压棒（SHPB）测试装置，对具有不同纤维体积含量的混凝土的动态分裂拉伸试验。基于试样的故障模式的观察和分析，结合入射波的能量变化率，阐述了动态分裂拉伸负荷下CNFC的故障特性。结果表明：添加CNFS对混凝土的动态分裂拉伸失效具有一定的抑制作用;试样的失效模式是沿着装载方向的中心故障;随着入射波的能量变化率的增加，标本的损伤程度逐渐加剧。

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