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http://dx.doi.org/10.7843/kgs.2015.31.9.17

Shear Strength Estimation of Clean Sands via Shear Wave Velocity  

Yoo, Jin-Kwon (Dept. of Civil and Environmental Engrg., Hanyang Univ.)
Park, Duhee (Dept. of Civil and Environmental Engrg., Hanyang Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.9, 2015 , pp. 17-27 More about this Journal
Abstract
We perform a series of experimental tests to evaluate whether the shear strength of clean sands can be reliably predicted from shear wave velocity. Isotropic drained triaxial tests on clean sands reconstituted at different relative densities are performed to measure the shear strength and bender elements are used to measure the shear wave velocity. Laboratory tests reveal that a correlation between shear wave velocity, void ratio, and confining pressure can be made. The correlation can be used to determine the void ratio from measured shear wave velocity, from which the shear strength is predicted. We also show that a unique relationship exists between maximum shear modulus and effective axial stress at failure. The accuracy of the equation can be enhanced by including the normalized confining pressure in the equation. Comparisons between measured and predicted effective friction angle demonstrate that the proposed equation can accurately predict the internal friction angle of granular soils, accounting for the effect of the relative density, from shear wave velocity.
Keywords
Shear strength; Shear wave velocity; Shear modulus; Effective vertical stress; Internal friction angle;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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