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Experimental Study on Chloride Diffusion in Structural Concrete considering the Effect of Damages Induced by the Cyclic Impact Loading

  • Peng-yu Zhu
  • Yong-lai Zheng
  • Wen-bin Luo
  • Jia Kou
  • Ru-xue Zhang
  • Shu-xin DengEmail author
Structural Engineering
  • 26 Downloads

Abstract

An experimental investigation on chloride diffusion in structural concrete under the cyclic impact loading is conducted. Effects of magnitudes and loading times are studied. Relationship between damage coefficients and chloride diffusion coefficients is obtained. The cyclic impact loading causes the initiation of new cracks and the propagation of existing cracks, which brings an obvious promotion for chloride diffusion. There should be a damage threshold. If the magnitude of the external loading is large enough to make the damage exceed the threshold, initiation and propagation of cracks become quite significant and chloride diffusion can be greatly promoted. With the increase of the damage coefficient, the chloride diffusion coefficient increases. The increasing rates decrease with long immersion times. Relationship curves of damage coefficients and chloride diffusion coefficients show a good correlation and can be well described with power functions.

Keywords

Chloride diffusion Impact loading Material damage Concrete structure Marine construction 

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Notes

Acknowledgements

This work was supported by the Shanghai SASAC Special support fund for technological innovation and level upgrading of enterprises.

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Copyright information

© Korean Society of Civil Engineers 2019

Authors and Affiliations

  1. 1.Dept. of Hydraulic EngineeringTongji UniversityShanghaiChina
  2. 2.Shanghai International Port (Group) Co., Ltd.ShanghaiChina
  3. 3.Laboratory for Architectural Plans and Programs of Army Logistics University of PLAChongqingChina
  4. 4.School of Mechanical EngineeringNanjing University of Science and TechnologyNanjingChina

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