Volume 6, Issue 2 (January 1984)

    A Rockwell Hardness Test for Concrete


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    The standard superficial Rockwell 15Y hardness test has been adapted for use on concrete. Hardness measurements were made on the mortar regions between the coarse aggregate pieces. A correlation between this hardness and the concrete's compressive strength was developed. For 7.5- by 15-cm (3- by 6-in.) cylinders, it is Rockwell 15Y hardness = 73.5 (log compressive strength in psi) — 187 or 73.5 (log compressive strength in MPa) — 28.0. Various effects of specimen preparation and size are discussed, as are the statistics of the test.

    Author Information:

    Winslow, DN
    Associate professor, School of Engineering, Purdue University, West Lafayette, IN

    Stock #: CCA10366J

    ISSN: 0149-6123

    DOI: 10.1520/CCA10366J

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    Title A Rockwell Hardness Test for Concrete
    Symposium , 0000-00-00
    Committee C09