EFFECT OF MOISTURE, CHLORIDE AND SULPHATE CONTAMINATION ON THE ELECTRICAL RESISTIVITY OF PORTLAND CEMENT CONCRETE

When reinforcement corrosion is under resistive control, the chloride-contamination level is known to influence the electrical resistivity of concrete and hence the kinetics of reinforcement corrosion. While some data exist on the relationship between moisture content on electrical resistivity of concrete, very little research has been conducted to evaluate the effect of chloride and sulphate ions on the conduction of electricity through concrete. This study was conducted to evaluate the effect of chloride and sulphate contamination on the electrical resistivity of concrete. Results indicate that both moisture, chloride and sulphate contamination influence the electrical resistivity of concrete. At higher salt concentrations, moisture content has very little influence on electrical resistivity. This indicates that in near dry concrete, high salt concentrations could sustain reinforcement corrosion. The reduction in the electrical resistivity in sulphate-contaminated concrete increases the rate of reinforcement corrosion in carbonated concrete.

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  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • SALEEM, M
    • Shameem, M
    • Hussain, S E
    • MASLEHUDDIN, M
  • Publication Date: 1996

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00724240
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Aug 19 1996 12:00AM