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Effect of loading rate and chemical corrosion on the mechanical properties of large diameter glass/basalt-glass FRP bars

机译:加载速率和化学腐蚀对大直径玻璃/玄武岩玻璃钢FRP棒力学性能的影响

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摘要

In this study, the end anchorage device for large diameter FRP bar was firstly developed, based on which the effect of loading rate on the direct tensile mechanical properties of 25 mm diameter GFRP bars was tested, and the anticorrosion properties of a newly developed type of FRP bar, the basalt-glass fiber reinforced polymer (B-GFRP) bars with different thicknesses of basalt FRP protecting layers (0, 1,3 and 5 mm) were investigated. The results show that with the increase of loading rate, the tensile strength and elongation ratio of GFRP bar increase considerably, while the elastic modulus remains roughly constant. The addition of BFRP protecting layer is also proved to be an effective way to enhance the resistance of GFRP bars to the chemical attacks. (C) 2015 Elsevier Ltd. All rights reserved.
机译:在这项研究中,首先开发了大直径FRP筋的末端锚固装置,在此基础上,测试了加载速率对25 mm直径GFRP筋的直接拉伸机械性能的影响,并开发了新型的FRP筋的防腐性能。研究了FRP钢筋,即玄武岩玻璃纤维增​​强聚合物(B-GFRP)钢筋,具有不同厚度的玄武岩FRP保护层(0、1、3和5 mm)。结果表明,随着加载速率的增加,玻璃纤维增​​强筋的​​拉伸强度和伸长率明显提高,而弹性模量保持大致恒定。事实证明,添加BFRP保护层是增强GFRP钢筋抵抗化学侵蚀的有效方法。 (C)2015 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Construction and Building Materials》 |2015年第15期|1059-1066|共8页
  • 作者单位

    Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Jiangsu, Peoples R China;

    Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Jiangsu, Peoples R China|State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Peoples R China;

    Shandong Prov Water Resources Res Inst, Jinan 250013, Peoples R 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

    GFRP; B-GFRP; Soil nail; Large diameter; Loading rate; Corrosion;

    机译:GFRP;B-GFRP;土钉;大直径;载荷率;腐蚀;

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