The Effects of Fines on Post Liquefaction Strength and Deformation Characteristics of Sand

Abstract:

This study has been carried out to determine how the fines content affects the post liquefaction strength and deformation characteristics of sand. With the GDS dynamic triaxial system, a series of monotonic undrained compression tests of the sand after liquefaction with variation in fines content from 0 to 40% were conducted, and effects of fines content on the post liquefaction strength and deformation characteristics of sand were analyzed. Results show that with the addition of fines up to a fines content of 30%, the stress-strain curve moves downward and axial strain at low intensive stage is increased, beyond this critical value of fines content the trend is reversed. However, shear strength of post-liquefied sand first decreases with increasing fines content, and beyond the critical value of fines content it increases with increasing fines content at the strength recovery stage when are subjected to monotonic loading. At the same time, the strength recovery rate decreases firstly and then increases with the increasing fines content.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 23-27
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.23
• Online since: November 2012
• Authors: Yan Li Wang*, Yong Wang
• Keywords: Fines Content, Post Liquefaction, Shear Strength, Stress-Strain Curve

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