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Influence of sustained load on corrosion characteristics of reinforced concrete beams under galvanostatic accelerated corrosion

机译:持续载荷对钢筋加速腐蚀下钢筋混凝土梁腐蚀特性的影响

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摘要

This study examines the effects of load levels on corrosion-expansion cracking and corrosion characteristics of steel bars in reinforced concrete (RC) beams and their causes. Based on the study of the influence of stirrups and cathode positions on the corrosion characteristics of RC beams, a reasonable stirrup arrangement and cathode position for the beams to be studied were determined, and 13 beams were designed and made according to the stirrup arrangement. Under the same environment, corrosion tests of the beams under four sustained load levels were conducted under galvanostatic accelerated corrosion. The results showed that the load had an important influence on the generation and development of longitudinal and transverse corrosion cracks and the corrosion characteristics of various steel bars. The variation of the resistance and distribution of the protective layer due to the different load effects is the essential reason for the difference in the corrosion characteristics. (C) 2019 Elsevier Ltd. All rights reserved.
机译:本研究探讨了负荷水平对钢筋混凝土(RC)梁钢筋的腐蚀 - 膨胀开裂和腐蚀特性及其原因。基于对RC梁的腐蚀特性对箍筋和阴极位置的影响的研究,确定了用于研究的光束的合理的箍筋布置和阴极位置,并且根据镫布置设计和制造13个梁。在相同的环境下,在Galvanostatic加速腐蚀下进行四个持续载荷水平下的梁的腐蚀试验。结果表明,该负荷对纵向和横向腐蚀裂缝的产生和开发以及各种钢筋的腐蚀特性产生了重要影响。由于不同负载效应导致的保护层的电阻和分布的变化是腐蚀特性差异的基本原因。 (c)2019 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Construction and Building Materials》 |2019年第10期|30-42|共13页
  • 作者单位

    China Three Gorges Univ Coll Civil Engn & Architecture Yichang 443002 Hubei Peoples R China|Collaborat Innovat Ctr Geohazards & Ecoenvironm T Yichang 443002 Hubei Peoples R China;

    China Three Gorges Univ Coll Civil Engn & Architecture Yichang 443002 Hubei Peoples R China|Collaborat Innovat Ctr Geohazards & Ecoenvironm T Yichang 443002 Hubei Peoples R China;

    China Three Gorges Univ Coll Civil Engn & Architecture Yichang 443002 Hubei Peoples R China|Collaborat Innovat Ctr Geohazards & Ecoenvironm T Yichang 443002 Hubei Peoples R China;

    China Three Gorges Univ Coll Civil Engn & Architecture Yichang 443002 Hubei 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

    RC beams; Corrosion similarity; Sustained load; Galvanostatic accelerated corrosion; Corrosion characteristics;

    机译:rc梁;腐蚀相似度;持续载荷;电流加速腐蚀;腐蚀特性;

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