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首页> 外文期刊>Magazine of Concrete Research >Flexural performance of functionally graded RC cross-section with steel and PP fibres
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Flexural performance of functionally graded RC cross-section with steel and PP fibres

机译：钢和PP纤维功能梯度RC截面的抗弯性能

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Many studies have been conducted on the behaviour of reinforced concrete (RC) to determine the effects of different fibre types on the mechanical properties of concrete. Tests such as flexural and shear tests are used to evaluate the behaviour of RC. Most previous studies have focused on reinforcement of the entire cross-section with one fibre type, but the use of double-type reinforcement is growing and the lower cost of polypropylene (PP) fibres can be a significant factor in the use of double-type reinforcement. Therefore, in this work, experimental tests and numerical simulations were carried out to study reinforcement of the cross-section with steel fibres, PP fibres or both, in two separate layers. Beams were reinforced using 0.5%, 1% and 2% fibre volume fractions of steel and PP fibres. The beams with a reinforced cross-section with one or two fibre types were evaluated under flexural loading. The results showed that reinforcement of the entire cross-section with steel fibres led to a higher load-carrying capacity than reinforcement of the cross-section with two fibre types in two separate layers.
机译：已经对钢筋混凝土的性能进行了许多研究，以确定不同纤维类型对混凝土力学性能的影响。诸如弯曲和剪切测试之类的测试用于评估RC的性能。以前的大多数研究都集中于用一种纤维类型增强整个横截面，但是双型增强的使用正在增长，并且聚丙烯（PP）纤维的较低成本可能成为双型使用的重要因素加强。因此，在这项工作中，进行了实验测试和数值模拟，以研究在两个单独的层中用钢纤维，PP纤维或两者同时进行的截面增强。使用0.5％，1％和2％的钢和PP纤维的纤维体积分数加固梁。在弯曲载荷下评估具有一种或两种纤维类型的横截面增强的梁。结果表明，与在两个单独的层中使用两种纤维类型的横截面加固相比，用钢纤维增强整个横截面具有更高的承载能力。

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