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    Volume 16, Issue 2 (December 1994)

    Strength Evaluation of In-Situ Concrete by Rebound Hammer and Core Testing

    CODEN: CCAOAD

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    Abstract

    This paper describes the results of an extensive field investigation where the quality of in-place concrete flatwork was evaluated. Nondestructive testing (NDT) was carried out using ultrasonic pulse velocity and rebound hammer techniques to establish a correlation with compressive strengths of core tests. The rebound hammer/core correlation formed the basis of a recommendation on the acceptance or rejection of the in-situ concrete. The ultrasonic pulse velocity UPV testing was primarily used to establish concrete uniformity. Limited freeze-thaw testing was carried out to determine the potential long-term durability performance. In order to minimize the effects of surface preparation on the test results, considerable time was spent to determine the optimum grinding procedure.


    Author Information:

    Langan, BW
    Professor emeritus and associate professor, University of Calgary, Calgary, Alberta

    Ward, MA
    Professor emeritus and associate professor, University of Calgary, Calgary, Alberta


    Stock #: CCA10297J

    ISSN: 0149-6123

    DOI: 10.1520/CCA10297J

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    Author
    Title Strength Evaluation of In-Situ Concrete by Rebound Hammer and Core Testing
    Symposium , 0000-00-00
    Committee C09