SYMPOSIA PAPER Published: 01 January 1988
STP29109S

Effects of Height-to-Diameter Ratio in Triaxial Specimens on the Behavior of Cross-Anisotropic Sand

Source

The drained stress-strain, volume change, and strength behaviors of sand with cross-anisotropic fabric were studied in triaxial compression tests. Dense specimens with square cross-sections, height-to-diameter (H/D) ratios of 1.0 and 2.5, and lubricated ends were employed. Specimens consisting of relatively long, flat sand grains were prepared with cross-anisotropic grain structure, whose axis of rotation was inclined at various orientations from vertical to horizontal. The specimen boundary conditions (flexible membrane and lubricated, rigid end plates) had different effects on the results for specimens with H/D = 1.0 and 2.5. The specimens with H/D = 2.5 exhibited distinct, but temporary drops in their prefailure stress-strain curves, and the friction angles changed in a consistent pattern over a range of 5.5°. In comparison, the specimens with H/D = 1.0 showed more smooth stress-strain behavior, and their friction angles were essentially constant with very little effect of orientation.

Author Information

Lade, PV
School of Engineering and Applied Science, University of California, CA
Wasif, U
School of Engineering and Applied Science, University of California, CA
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Details
Developed by Committee: D18
Pages: 706–714
DOI: 10.1520/STP29109S
ISBN-EB: 978-0-8031-5048-5
ISBN-13: 978-0-8031-0983-4