A Rapid Method for Measuring the Acid-Soluble Chloride Content of Powdered Concrete Samples

    Volume 15, Issue 1 (July 1993)

    ISSN: 0149-6123

    CODEN: CCAOAD

    Page Count: 11


    Al-Qadi, IL
    Assistant professor, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Brown, M
    undergraduate research assistant, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Henry, M
    graduate research assistant, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Weyers, RE
    Professor, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Abstract

    A rapid alternative method has been developed to the standard ASTM and AASHTO test methods for determining the acid-soluble chloride content of concrete. The method uses an acidic solution containing a deforming agent to digest the collected powdered chloride samples. A stabilizing solution is used in place of a temperature correction factor for the direct read of the solution's chloride concentration with a specific ion electrode.

    Concrete samples from precontaminated specimens cast in the laboratory and powdered samples collected from concrete bridges in Virginia, Pennsylvania, Wisconsin, and Florida were tested in the laboratory. A linear relationship was developed between the rapid and the ASTM standard method which may be used to predict the standard equivalent acid-soluble chloride content from the rapid test results.

    The proposed standard rapid test procedure is presented in the Appendix.


    Paper ID: CCA10582J

    DOI: 10.1520/CCA10582J

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    Author
    Title A Rapid Method for Measuring the Acid-Soluble Chloride Content of Powdered Concrete Samples
    Symposium , 0000-00-00
    Committee C09