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Title: CORRECTION RELATIONSHIP OF UNIAXIAL COMPRESSIVE BREAKAGE STRENGTH DEPENDING ON THE SCALE EFFECT
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CORRECTION RELATIONSHIP OF UNIAXIAL COMPRESSIVE BREAKAGE STRENGTH DEPENDING ON THE SCALE EFFECT
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1314-2704
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English
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18
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1.3
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It is a certainty that a rock massif is a very complex environment, known only partially; in the laboratory we cannot produce all the details encountered in situ; therefore, most of the properties determined experimentally not fully express their real value that they have in rock massif. As theoretical basis we might consider theory of similitude initiated by Newton, in the sense of similarity that we can establish to the boundary between theory and experiment. Based on this and considering the applicable theorems that define main properties and recognition criteria of phenomena to different scales to which material systems are analyzed and implicitly rocks, we have studied the variation manner of rock characteristics established on specimens of different shapes and sizes. This paper presents the influence of scale effect under mechanical characteristics of rocks, as result of studies realized on both cubical and cylindrical specimens. Increasing of geometric dimensions of the specimen involves a higher degree of inhomogeneity of rocks as regards the presence of discontinuities in specimens mass. An own calculation relationship of compressive breakage strength when the specimens cannot be performed to the diameter of 50 mm and for a slenderness ratio equal to 2, it is also proposed.
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conference
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18th International Multidisciplinary Scientific GeoConference SGEM 2018
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18th International Multidisciplinary Scientific GeoConference SGEM 2018, 02-08 July, 2018
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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207-214
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02-08 July, 2018
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website
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cdrom
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256
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scale effect; strength; slenderness ratio; inhomogeneity; compressive; tensile; cohesion
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