Research Article
Jan 1963
Shear Strength of Sands during Rapid Loadings
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VIEW THE REPLYAuthors: Robert V. Whitman, M.ASCE, and Kent A. HealyAuthor Affiliations
Publication: Transactions of the American Society of Civil Engineers
Volume 128, Issue 1
Abstract
Triaxial tests with times-to-failure ranging from 5 min to 5 milliseconds have been used to investigate the effect of strain-rate on the strength of dry and saturated sands. New techniques were developed for applying strains rapidly, and for measuring the resultant stresses and pore pressures. It was necessary to give careful attention to the possible influence of testing errors, of inertia forces, and of the membrane effect. The peak friction angles of the sands that were tested were substantially independent of failure-time. However, the excess pore pressures generated within saturated loose sands did, for certain conditions, vary with failure-time, and for these conditions the compressive strengths were correspondingly time dependent. A tentative hypothesis has been advanced to explain this behavior. One loos e saturated sand exhibited a pronounced yield point at low strains, and the yield point stress decreased as the rapidity of load application increased.
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© 1963 American Society of Civil Engineers.
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Published in print: Jan 1963
Published online: Feb 10, 2021
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Robert V. Whitman, M.ASCE
Assoc. Prof. of Civ. Engrg., Massachusetts Inst. of Tech., Cambridge, Mass.
Kent A. Healy
Research Assoc., Dept. of Civ. Engrg., Massachusetts Inst. of Tech., Cambridge, Mass.
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