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Chloride transference during electrochemical chloride extraction process

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Abstract

Chemical titration method and lab-made chloride probes were jointly adopted to investigate the effects of water-to-cement (W/C) ratio and the impressed current density on chloride transport for cement-based materials during electrochemical chloride extraction (ECE) process. The dissolution of bound chlorides and the effect of current density on dissolution were analyzed. The variations of chloride concentration at different depths and the chloride transference process were monitored. Test results show that W/C ratios adopted have slight influence on chloride extraction, while chloride extraction efficiency is mainly determined by the impressed current density. During ECE process a portion of bound chloride ions dissolved and the amount of bound chlorides released is directly proportional to current density.

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Authors and Affiliations

  1. Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education of China, Shanghai, 200092, China

    Wu Yao & Zheng Zhao

Authors
  1. Wu Yao
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  2. Zheng Zhao
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Correspondence to Wu Yao.

Additional information

This work was supported by the National Basic Research Program of China (973 Program) (Grant No. 2009CB623105), Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070247063), the Open Research Fund of State Key Laboratory of Costal and Offshore Engineering (Grant No. LP0707) and the Scientific Research Foundation for Returned Overseas Chinese Scholars of Ministry of Education of China.

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Yao, W., Zhao, Z. Chloride transference during electrochemical chloride extraction process. Sci. China Technol. Sci. 53, 1466–1470 (2010). https://doi.org/10.1007/s11431-010-3135-0

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  • DOI: https://doi.org/10.1007/s11431-010-3135-0

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