Volume 9, Issue 2 (June 2011)                   IJCE 2011, 9(2): 135-144 | Back to browse issues page

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Dabiri R, Askari F, Shafiee A, Jafari M K. Liquefaction resistance of sand-silt mixtures using laboratory based shear wave velocity. IJCE 2011; 9 (2) :135-144
URL: http://ijce.iust.ac.ir/article-1-400-en.html
Abstract:   (15153 Views)

Laboratory data, which relate the liquefaction resistance of Firoozkooh sand and non-plastic silt mixtures to shear wave velocity are

presented and compared to liquefaction criteria derived from seismic field measurements by Andrus and Stokoe [1]. In the work

described herein, cyclic triaxial and resonant column tests were conducted on specimens of clean sand and sand-silt mixtures with silt

content up to 60%, prepared at different densities. Cyclic undrained strength and small strain shear wave velocity were determined

for identical specimens formed by undercompaction method. It was found that silt content affects cyclic resistance and shear wave

velocity. In addition, the laboratory results indicated that using the existing field-based correlations will overestimate the cyclic

resistance of the Firoozkooh sand-silt mixtures when silt content is 60%. For clean sand and the specimens containing up to 30% fines,

results of this study on cyclic resistance are fairly consistent with Andrus and Stokoe correlations. These findings suggest the need for

further evaluation of the effects of non-plastic fines content upon liquefaction criteria derived from seismic field measurements.

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Type of Study: Research Paper | Subject: Seismic Geotechnique

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