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    An Evaluation of Bond Wrench Testing Apparatuses

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    Summarized are results of a combined testing and analytical investigation of four different bond wrench testing systems. The testing program involved placing a calibration block within each testing apparatus and applying a range of loads to the block. This calibration device was designed to simulate a standard brick couplet specimen and was instrumented with linear strain gauges which were monitored and recorded during loading. The results of these tests were compared and discussed in an effort to determine what attributes of the testing apparatuses can significantly affect the stress distribution in masonry couplet specimens. Evaluation of the bond wrench testing system was also performed using a finite element analysis.

    Finally, in an effort to extend the scope of C 1072 -92 to include hollow masonry assemblies, an analytical evaluation of hollow couplet specimens was made. The results of these finite element analyses are presented and discussed.


    masonry, flexural bond, testing, bond wrench, evaluation, calibration

    Author Information:

    McGinley, WM
    Associate Professor, North Carolina A & T State University, Greensboro, NC

    Committee/Subcommittee: C15.07

    DOI: 10.1520/STP18207S