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Experimental evaluation of tensile strength test methods for steel fibre-reinforced concrete

机译:钢纤维混凝土抗拉强度试验方法的试验评估

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摘要

This study presents an experimental evaluation of three different methods for determining the tensile strength of steel fibre reinforced concrete (SFRC). The test methods include the splitting test (ST), double punch test (DPT) and direct tensile test (DTT). The compressive strength of the concrete used in this study ranged between 30 and 80 MPa with 0%, 1.5% and 3% steel fibre by volume of the concrete. In total, 81 concrete cylinders were cast and tested for 28-d compressive strength, splitting tensile strength and double punch tensile strength of the concrete. In addition, 27 concrete prism specimens were cast and tested to determine the direct tensile strength of the concrete. The test results show that, compared to the ST, the DPT is more effective in predicting the tensile strength of SFRC, as the tensile strengths obtained from the DPT and the direct tensile test are very close. The DPT is easier to perform and costs less than the ST and the DTT.
机译:这项研究提出了一种用于确定钢纤维增强混凝土(SFRC)拉伸强度的三种不同方法的实验评估。测试方法包括劈裂测试(ST),双打孔测试(DPT)和直接拉伸测试(DTT)。本研究中使用的混凝土的抗压强度在30至80 MPa之间,其中钢纤维的体积百分比为0%,1.5%和3%。总共浇铸了81个混凝土圆柱体,并测试了28天的抗压强度,劈裂抗拉强度和双冲头抗拉强度。此外,浇铸并测试了27个混凝土棱柱样本,以确定混凝土的直接抗拉强度。测试结果表明,与ST相比,DPT在预测SFRC的抗张强度方面更为有效,因为从DPT和直接拉伸试验获得的抗张强度非常接近。 DPT比ST和DTT更容易执行且成本更低。

著录项

  • 来源
    《Magazine of Concrete Research》 |2019年第8期|385-394|共10页
  • 作者单位

    Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW, Australia;

    Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW, Australia;

    Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW, Australia;

    Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW, Australia;

    Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fibre-reinforced concrete; plain concrete; punching;

    机译:纤维混凝土;普通混凝土;冲压;

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