BRAZILIAN TENSILE STRENGTH AND ITS RELATIONSHIP WITH UNIAXIAL TENSILE STRENGTH
V. P. Efimov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Rocks, tensile strength, Brazilian test, fracture resistance, structural parameter
Abstract
Comparison of Brazilian tensile strength with uniaxial tensile strength is presented. It is noted that on the basis of only statistical processing, it is possible to obtain only rough estimates of direct tensile strength from the measured Brazilian strength. To agree on these values, models that take into account the structure of the material should be used. Taking into account the biaxiality of the stress field, which leads to a decrease in Brazilian strength compared to direct tensile stretch, and considering the nonuniformity of tensile stresses causing the opposite effect, it is possible to correlate the values of tensile strength measured by different methods.
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