Effect of non-plastic silt on liquefaction susceptibility of marine sand by transparent laminar shear box in shaking table

There are some ambiguities in understanding of the effect of non-plastic fine content (silt) on the liquefaction behaviour of sand in the literature. Reviewing the results of field and laboratory studies suggests that increasing the amount of non-plastic fine content in sand can lead to improvement or deterioration of liquefaction resistance. In this study, the effect of non-plastic silt on liquefaction resistance of Anzali sand is investigated using shaking table tests. According to the results, for the relative density of 30%, liquefaction resistance was found to be initially decreasing by increasing the silt content until the limiting fine content (LFC) as 15% and increasing thereafter. However, for the relative density of 60%, liquefaction resistance showed a continuously decreasing trend by increasing the silt content. Finally, comparison of the result through the limiting bounds of pore pressure obtained in this study with that of other researchers showed an appropriate consistency.