Abstract
A new indirect test for determining the tensile strength of brittle materials like concrete is presented. The method consists of testing frame-type specimens between the compression platens of a testing machine, the geometry of the frame being such that one of its members is in tension. Frames having three different sizes are tested. Photoelastic investigation has been conducted to determine the tensile stresses in the frame. Tests have been made on cement mortar and concrete frames and the frame size appropriate for determining the tensile strength has been indicated. The tensile strength determined from the frame specimens has been compared with the cylinder splitting strength.
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