Results 141 to 150 of about 4,694 (195)

Development of a True Triaxial Testing Apparatus

Geotechnical Testing Journal, 1992
Abstract 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
openaire   +1 more source

A True Triaxial Testing Cell

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
openaire   +1 more source

Analysis of Shear Banding in True Triaxial Tests on Sand

Journal of Engineering Mechanics, 2001
A series of true triaxial tests have been performed on rectangular prismatic specimens of Santa Monica Beach sand at three different relative densities to study the occurrence of failure, mechanism...
Lade, Poul V., Wang, Q.
openaire   +4 more sources

The Cambridge True Triaxial Apparatus

1988
In 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
openaire   +1 more source

True Triaxial Yielding and Hardening of Rock

Journal of Geotechnical Engineering, 1987
Analysis 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
openaire   +2 more sources

The true triaxial strength anisotropy of sand

Géotechnique
Sand exhibits transversely isotropic (TI) characteristics, with its strength properties influenced by the coupling effects of the intermediate principal stress ratio b and the orientation angle δ of the bedding plane (BP) relative to the major principal stress.
Dechun Lu, Jingyu Liang, Zhiwei Gao, Junhong Zhang, Xiuli Du   +4 more
openaire   +1 more source

Development of a True Triaxial Apparatus for Sands and Gravels

Geotechnical Testing Journal, 2008
Abstract This paper presents a recently developed true triaxial apparatus and a series of verification studies. The apparatus is capable of handling 241-mm cubical specimens providing the means for testing specimens under a wide variety of stress paths under drained and undrained conditions.
Changho Choi, Pedro Arduino, Michael D. Harney   +2 more
openaire   +1 more source

Endochronic Modeling of Sand in True Triaxial Test

Journal of Engineering Mechanics, 1985
The endochronic constitutive equation is written in differential form, which is then used to describe the deviatoric behavior of drained sand in true triaxial test. Explicit equations have been derived. The modified concept of intrinsic time is applied so that no built‐in discontinuities exist in the constitutive equation. Triaxial compression test (TC)
Han C. Wu, Zhan K. Wang, M. R. Aboutorabi   +2 more
openaire   +1 more source

True-triaxial strength criteria for rock

International Journal of Rock Mechanics and Mining Sciences, 2009
Abstract 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 ...
openaire   +1 more source

True Triaxial Apparatuses with Two Rigid Boundaries

Site Characterization and Modeling, 2005
A 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, J. Koseki, K. Hayano, T. Sato   +3 more
openaire   +1 more source