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Strength and failure characteristics of sandstone true triaxial test
Chenlong Su, Hehua Zhu, Wuqiang Cai
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True Triaxial Testing of Anisotropic Solids
56th U.S. Rock Mechanics/Geomechanics Symposium, 2022ABSTRACT: Accurate determination of rock mechanical properties (particularly sedimentary shales, mica and schists with foliation and bedding planes) is critical to the safe design and excavation of underground mines and tunnels.
X. Zhu, M. Serati, E. Mutaz, Z. Chen
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True Triaxial Apparatuses with Two Rigid Boundaries
Site Characterization and Modeling, 2005A small-scale and a large-scale true triaxial apparatuses (where σ1≠σ2≠σ3) were recently developed at the Institute of Industrial Science, University of Tokyo, Japan and are described in this paper. In these apparatuses, a comprehensive loading system that can control both strain rate and stress rate is used for the vertical (axial) direction.
L. Q. AnhDan +3 more
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Development of a True Triaxial Testing Apparatus
Geotechnical Testing Journal, 1992Abstract A stress-controlled, flexible boundary, true (or cubical) triaxial apparatus has been developed to investigate the behavior of cemented sand under various stress paths which are not achievable using conventional axisymmetric triaxial apparatus.
KR Reddy, SK Saxena, JS Budiman
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1988
Results of both drained and undrained triaxial tests performed with a true triaxial cell on both natural and artificial clays are presented and discussed. The true triaxial apparatus, which has been used for about 20 years, is fully described. The apparatus has recently been modified to improve the measurement of lateral deformations.
V Silvestri, RN Yong, AMO Mohamed
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Results of both drained and undrained triaxial tests performed with a true triaxial cell on both natural and artificial clays are presented and discussed. The true triaxial apparatus, which has been used for about 20 years, is fully described. The apparatus has recently been modified to improve the measurement of lateral deformations.
V Silvestri, RN Yong, AMO Mohamed
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The Cambridge True Triaxial Apparatus
1988In true triaxial apparatus, samples of soil are subjected to three independent principal stresses and strains. Such apparatus can readily be used for controlled exploration of principal stress or principal strain space to provide information concerning the anisotropic response of the soil to aid the development of constitutive relations.
DW Airey, DM Wood
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True Triaxial Yielding and Hardening of Rock
Journal of Geotechnical Engineering, 1987Analysis of test results for intact and granulated marbles (cemented and noncemented granular materials) adds to the indications that strain softening does not express a real material behavior; it highlights similarities in stressstrain relations and confirms equality of a stress and a plastic strain invariant. The physical meaning of the parameters of
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True-triaxial strength criteria for rock
International Journal of Rock Mechanics and Mining Sciences, 2009Abstract This paper reviews some strength criteria which include the role of the intermediate principal stress, and proposes a new criterion. Strength criteria of the form σ oct = f N ( σ oct ), such as Drucker–Prager, represent a rotation surface in the principal stress space, symmetric to the line σ 1 = σ 2 = σ 3 in the meridian plane ...
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DEM simulations of sandstone under true triaxial compressive tests
Acta Geotechnica, 2016Numerically simulated true triaxial compression tests (σ 1 ≥ σ 2 ≥ σ 3) are conducted in this study to elucidate the failure mechanism of sandstone using 3D discrete element method (DEM), in particular the effect of the intermediate principal stress (σ 2 ...
K. Duan, C. Y. Kwok, X. Ma
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True-triaxial compressive strength of Maha Sarakham salt
International Journal of Rock Mechanics and Mining Sciences, 2013Abstract True triaxial compressive strengths of the Maha Sarakham salt are experimentally determined by using a polyaxial load frame. The salt specimens with nominal dimensions of 5.4×5.4×10.8 cm 3 are loaded to failure with the minimum principal stress, σ 3 , varying from 0 to 7 MPa, and the intermediate principal stress, σ 2 , varying from 0 ...
Tanapol Sriapai +2 more
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