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首页> 外文期刊>Magazine of Concrete Research >Chloride diffusion in concrete subjected to compressive loading
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Chloride diffusion in concrete subjected to compressive loading

机译：压缩载荷作用下混凝土中氯离子的扩散

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摘要

The influence of lateral surface microcracking on chloride diffusion in ordinary concrete (OC) and high-performance concrete (HPC) was investigated. The development of microcracks in the concretes was described by an evaluation indicator calculated from strain measurements at macroscopic level. Concrete specimens were subjected to monotonic or cyclic loading to different loading levels and then long-term chloride bulk diffusion tests were carried out on compressed specimens with only one exposed lateral surface. The effect of compressive loading on the chloride diffusion coefficient was analysed by means of the specific crack area. The results indicate that an increase in compressive loading increases the chloride diffusion coefficient and the effect is more obvious in OC than HPC. However, compared with OC, the chloride diffusion coefficient of HPC is more sensitive to microcracking in the lateral surface.
机译：研究了侧面微裂纹对普通混凝土（OC）和高性能混凝土（HPC）中氯离子扩散的影响。通过从宏观水平的应变测量计算出的评估指标来描述混凝土中微裂纹的发展。对混凝土试样进行单调或循环荷载至不同的荷载水平，然后对仅具有一个裸露侧面的压缩试样进行长期的氯化物整体扩散测试。通过特定的裂缝区域分析了压缩载荷对氯化物扩散系数的影响。结果表明，压缩载荷的增加会增加氯离子的扩散系数，而OC中的效果比HPC更明显。但是，与OC相比，HPC的氯离子扩散系数对侧面的微裂纹更敏感。

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  • 来源
    《Magazine of Concrete Research》 |2014年第20期|991-997|共7页
  • 作者

    Lihua Zhang; Jinqing Jia; Gang Meng; Weiqing Zhu;

  • 作者单位

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, PR China;

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, PR China;

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, PR China;

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, PR 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
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