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Comparison of extension and compression triaxial tests for dense sand and sandstone
Abstract It is generally observed that for a given confining pressure the friction angle at peak strength of dense sand deduced from triaxial compression test is smaller than the one obtained from extension tests. In fact, this conclusion depends essentially on the way one takes into account the global confinement condition. In this paper, we show that when there is no significant grain crushing, the dependence of the maximum friction angle with the average of minor and major principal effective stress is similar for compression and extension tests. A similar result is obtained for sandstones when the failure mode involves a shear failure plane.
Comparison of extension and compression triaxial tests for dense sand and sandstone
Abstract It is generally observed that for a given confining pressure the friction angle at peak strength of dense sand deduced from triaxial compression test is smaller than the one obtained from extension tests. In fact, this conclusion depends essentially on the way one takes into account the global confinement condition. In this paper, we show that when there is no significant grain crushing, the dependence of the maximum friction angle with the average of minor and major principal effective stress is similar for compression and extension tests. A similar result is obtained for sandstones when the failure mode involves a shear failure plane.
Comparison of extension and compression triaxial tests for dense sand and sandstone
Corfdir, A. (author) / Sulem, J. (author)
Acta Geotechnica ; 3 ; 241-246
2008-07-08
6 pages
Article (Journal)
Electronic Resource
English
Compression test , Extension test , Friction angle , Sand , Sandstone , Triaxial test Engineering , Geoengineering, Foundations, Hydraulics , Continuum Mechanics and Mechanics of Materials , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics , Structural Mechanics
Comparison of extension and compression triaxial tests for dense sand and sandstone
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