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Effect of Cyclic Stress Ratio and Non-Plastic Fines Content on the Liquefaction Potential of Sandy and Silty Soil in Cyclic Triaxial Testing

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Soil Mechanics and Foundation Engineering Aims and scope

In the study of liquefaction potential, most researchers have focused on clean sand. Reports from studies on silty sand and silt are rare; thus, different aspects of the subject are not well known. The present investigation uses cyclic triaxial tests, the effect of factors such as the cyclic stress ratio (CSR), and the non-plastic finegrained soil content on the liquefaction of the silty sand and pure silt. The effect of the pressure applied to the soil structure in the saturation phase also was studied. The results indicate that an increase of 30% in the non-plastic fine silt content in the sand decreased the liquefaction resistance. An increase in the silt content to more than 30% increased the liquefaction resistance because, with an increase in the fines content up to 30%, sand governs the soil behavior and, with an increase in the fines content to more than 30%, silt governs the soil behavior. The effect of the CSR on the liquefaction of the samples was evident. Changes in the CSR and fines content produced changes in the maximum pore water pressure. The effect of the pressure applied to the soil structure in the saturation phase on pure silt was insignificant, but this difference was more prominent for silty sand and, to some extent, clean sand.

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Correspondence to M. Fadaee.

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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 6, November-December, 2021.

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Marzuni, S.S., Fadaee, M., Bahmanpour, A. et al. Effect of Cyclic Stress Ratio and Non-Plastic Fines Content on the Liquefaction Potential of Sandy and Silty Soil in Cyclic Triaxial Testing. Soil Mech Found Eng 58, 467–473 (2022). https://doi.org/10.1007/s11204-022-09768-w

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  • DOI: https://doi.org/10.1007/s11204-022-09768-w

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