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Tensile strength is used when dimensioning chambers (span between columns), determining cutting force on excavators, calculating blasting effects, etc. Experience has shown that the tensile strength of rocks represents 10-15% of the uniaxial compressive strength. For more precise determination of this parameter, laboratory tests, direct or indirect methods are used. In this paper, tests of tensile strength using the indirect method on samples of white marble from the Venčac deposit are presented. Before determining the tensile strength, the velocity of longitudinal elastic waves was measured on each test specimen. Based on the obtained results, a correlation was determined between the tensile strength of the rock material and the propagation velocity of the longitudinal (longitudinal) elastic waves.
