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Discontinuous and anisotropic nature of rocks of all sizes is such that distinction has to be made between strength of matrix and strength of rock mass; it is unfortunately impossible to make measurements throughout entire rock mass and measurements on matrix give strength values which are usually so influenced by specimen size that extrapolation to larger scale is impossible; however, if mass contains salient and widespread geological discontinuities, strength of mass is dictated by their strength properties; these properties can be measured since scale effect has little or no influence, depending on nature of discontinuities.
Discontinuous and anisotropic nature of rocks of all sizes is such that distinction has to be made between strength of matrix and strength of rock mass; it is unfortunately impossible to make measurements throughout entire rock mass and measurements on matrix give strength values which are usually so influenced by specimen size that extrapolation to larger scale is impossible; however, if mass contains salient and widespread geological discontinuities, strength of mass is dictated by their strength properties; these properties can be measured since scale effect has little or no influence, depending on nature of discontinuities.
Measurement of strength of rocks
La mesure de la resistance des roches
Bernaix, J. (author)
Proceedings of the Geotechnical Conference -- Shear Strength Properties of Natural Soils and Rocks ; 1967 ; Norway , Oslo
1967
13 pages
Conference paper
English
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