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Deterioration of the bond behavior between CFRP and corroded steel in wet-dry cycling environment

机译：湿干循环环境中CFRP和腐蚀钢之间粘接行为的劣化

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摘要

The purpose of this paper is to investigate the deterioration of the bond behavior between CFRP and corroded steel in wet-dry cycling environment and the corrosion effects on them. By conducting the shear tests of 60 CFRP-corroded steel sing lap specimens with 5 duration levels (0, 7, 21, 42 and 84 days), the bond behavior was obtained and its relationships with duration were established. In addition, the corrosion effect on the bond strength and the bond deterioration were investigated on the basis of corrosion analysis. Results show that the wet-dry cycling environment had a significant negative impact on bond behavior between CFRP and corroded steel; those specimens with smaller non-uniform volume loss ratios, larger pit densities and moderate pit sizes may have higher bond strengths; an appropriate number of corrosion pits distributed on the steel surface could improve the resistance to the environmental erosion.
机译：本文的目的是探讨CFRP与腐蚀钢之间粘接行为的恶化，湿润循环环境和对它们的腐蚀作用。 通过用5个持续时间（0,7,21,42和84天）进行60 CFRP腐蚀钢的剪切试验，获得键的行为，并建立与持续时间的关系。 此外，在腐蚀分析的基础上研究了对粘合强度和债券劣化的腐蚀效应。 结果表明，湿干循环环境对CFRP和腐蚀钢之间的粘合行为产生了显着的负面影响; 那些具有较小的非均匀体积损失比率，较大的孔密度和中等凹坑尺寸的标本可能具有更高的粘合强度; 分布在钢表面上的适当数量的腐蚀坑可以改善对环境侵蚀的抵抗力。

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  • 来源
    《Composite Structures》 |2021年第9期|114202.1-114202.16|共16页
  • 作者

    Li Han; Xu Shanhua; Wang Youde; Song Cuimei;

  • 作者单位

    Xian Univ Architecture & Technol Sch Civil Engn Xian 710055 Peoples R China;

    Xian Univ Architecture & Technol Sch Civil Engn Xian 710055 Peoples R China|State Key Lab Green Bldg Western China Xian 710055 Peoples R China;

    Xian Univ Architecture & Technol Sch Civil Engn Xian 710055 Peoples R China|State Key Lab Green Bldg Western China Xian 710055 Peoples R China;

    Xian Univ Architecture & Technol Sch Civil Engn Xian 710055 Peoples R China|Wuhan Zhenghua Architectural Design Co Ltd Wuhan 430000 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

    Bond behavior; Wet-dry cycling environment; Carbon fiber reinforced polymer; Steel corrosion;

    机译：债券行为;湿式循环环境;碳纤维增强聚合物;钢腐蚀;

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