International Journal of Civil Engineering

en Liquefaction resistance of sand-silt mixtures using laboratory based shear wave velocity Seismic Geotechnique Seismic Geotechnique Research Paper Research Paper 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. Non-plastic fines, Liquefaction resistance, Shear wave velocity, Field performance data, Cyclic triaxial test, Resonant column test 135 144 http://ijce.iust.ac.ir/browse.php?a_code=A-10-186-2&slc_lang=en&sid=1 Rouzbeh Dabiri Rouzbehdabiri@gmail.com 1800319475328460010134 1800319475328460010134 Yes Islamic Azad University, Tabriz Branch, Tabriz Faradjollah Askari Askari@iiees.ac.ir 1800319475328460010135 1800319475328460010135 No International Institute of Earthquake Engineering and Seismology (IIEES) Ali Shafiee ali_shafiee_iiees@yahoo.com 1800319475328460010136 1800319475328460010136 No International Institute of Earthquake Engineering and Seismology (IIEES) Mohammad Kazem Jafari jafari@iiees.ac.ir 1800319475328460010137 1800319475328460010137 No International Institute of Earthquake Engineering and Seismology (IIEES)