Minnesota Shear Test Reproducibility and Correlation with Internal Bond

The rectangular (MSTR) and parallelogram (MSTP) test specimen configurations give different average shear strengths for an individual panel. This may result from the nonuniformity of the shear-stress distribution in MSTR specimens. MSTR results are not affected when the rate of loading is increased by a factor of five, nor when different operators perform the tests. Both MSTR and MSTP results are linearly correlated to internal bond, with MSTR having the strongest correlation.

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