Abstract
Previous studies claim that the presence of higher proportion of plastic clay or silt particles in sandy deposits enhances the liquefaction strength of soil. However, the behavior of sand mixed with non-plastic silt is still a part of the enduring discussion among geotechnical researchers. The present study is carried out to determine the liquefaction strength of Ganga sand containing different percentages of non-plastic silt ranging from 0%, 5%, 10%, 20%, 30%, and 100%. Undrained strain-controlled cyclic triaxial tests have been carried out at 0.5 Hz frequency, 0.65% axial strain level, and confining pressure of 150 kPa. Considering generation of excess pore water pressure (EPWP) value of 0.95 as the criteria for liquefaction, the result suggests that the rate of EPWP generation has decreased initially upto 10% silt content, and thereafter, at 30% silt content the rate has increased tremendously which eventually got reduced at soil sample having 100% silt.
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Nilay, N., Chakrabortty, P. (2021). Evolution in Liquefaction Strength of Ganga River Sand Due to Intrusion of Non-plastic Silt. In: Latha Gali, M., Raghuveer Rao, P. (eds) Geohazards. Lecture Notes in Civil Engineering, vol 86. Springer, Singapore. https://doi.org/10.1007/978-981-15-6233-4_19
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DOI: https://doi.org/10.1007/978-981-15-6233-4_19
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