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首页> 外文期刊>Materials and structures >Triaxial mechanical behaviour of hybrid basalt-polypropylene fibre-reinforced concrete: The effect of micro-fibres at multi scale levels
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Triaxial mechanical behaviour of hybrid basalt-polypropylene fibre-reinforced concrete: The effect of micro-fibres at multi scale levels

机译:杂交玄武岩 - 聚丙烯纤维增强混凝土三轴力学行为:微纤维在多尺度水平下的影响

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摘要

The triaxial mechanical properties of hybrid basalt–polypropylene fibre-reinforced concrete (HBPRC) were investigated in detail. The different effects of micro-basalt fibre (BF) and micro-polypropylene fibre (PF) on the triaxial properties of concrete were revealed. The strength criterion for HBPRC was established. The results showed that the hydrostatic behaviour, volumetric strain, peak deviatoric stress, elastic modulus, and Poisson’s ratio of HBPRC are affected by not only the confining pressure but also the BF and PF. The confining pressure gradually changes the failure mode of HBPRC from split failure to shear failure and extrusion plastic flow failure. The BF and PF mainly improve the strength and deformation performance of concrete, respectively. A nonlinear Mohr–Coulomb (M–C) strength criterion for HBPRC, which takes into account the fibre effect, is established. The calculated results performed using the proposed criterion agree well with the experimental results.
机译:详细研究了杂化玄武岩 - 聚丙烯纤维增强混凝土(HBPRC)的三轴力学性能。 揭示了微玄武岩纤维(BF)和微聚丙烯纤维(PF)对混凝土三轴性质的不同效果。 建立了HBPR的强度标准。 结果表明,静水压行为,体积菌株,峰值偏离应力,弹性模量和HBPRC的比例不仅受到限制压力而且是BF和PF的影响。 限制压力逐渐改变了HBPRC的故障模式从分开故障到剪切失效和挤出塑料流量失效。 BF和PF分别主要提高了混凝土的强度和变形性能。 建立了非线性MOHR-COULOMB(M-C)HBPRC的强度标准,其考虑了纤维效应。 使用所提出的标准进行的计算结果与实验结果很好。

著录项

  • 来源
    《Materials and structures》 |2021年第3期|126.1-126.20|共20页
  • 作者单位

    School of Civil Engineering Xi’an University of Architecture and Technology Xi’an 710055 People’s Republic of China;

    School of Civil Engineering Xi’an University of Architecture and Technology Xi’an 710055 People’s Republic of China;

    School of Civil Engineering Xi’an University of Architecture and Technology Xi’an 710055 People’s Republic of China;

    School of Civil Engineering Xi’an University of Architecture and Technology Xi’an 710055 People’s Republic of China;

    State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan 430072 People’s Republic of China;

    School of Civil Engineering Central South University Changsha 410075 People’s Republic of China;

    School of Civil Engineering Qingdao University of Technology Qingdao 266033 People’s Republic of China;

  • 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

    Basalt fibre; Polypropylene fibre; Hydrostatic behaviour; Nonlinear M–C strength criterion;

    机译:玄武岩纤维;聚丙烯纤维;静水压行为;非线性M-C强度标准;

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