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http://dx.doi.org/10.7843/kgs.2021.37.8.5

Effect of Fines Content Including Clay on Liquefaction of Silt  

Hur, Soung-Hoon (Dept. of Civil Environmental Engrg., Korea Maritime and Ocean Univ.)
Lee, Seong-Cheol (Dept. of Civil Environmental Engrg., Korea Maritime and Ocean Univ.)
Kim, Tae-Hyeong (Dept. of Civil Environmental Engrg., Korea Maritime and Ocean Univ.)
Kim, Byeong-Jun (Dept. of Civil Environmental Engrg., Korea Maritime and Ocean Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.37, no.8, 2021 , pp. 5-13 More about this Journal
Abstract
Liquefaction behaviors of two natural silty samples containing fines including clay of 50% or more (Sample No.1 was silt 44.1% and clay 8.8%, sample No.2 was silt 57.2% and clay 12.4%) were examined by a cyclic triaxial test. According to the results on samples containing 50% or more of fine particles, an increase in the fine content decreases the liquefaction resistance of the sample. In other words, when the fine content increases, the liquefaction state of sample is reached with a small number of cyclic loads. In the relationship between the excess pore water pressure ratio and the number of cycles, the slope of the excess pore water pressure ratio increases more steeply as the fine content increases. As a result of analyzing the liquefaction behavior of the two silts with the content of clay contained in the fines, liquefaction occurred more easily in the No.2 silt with high clay content. This result shows that the clay contained in the fines affects the liquefaction behavior of the silt.
Keywords
Clay; Excess pore water pressure ratio; Fines content; Liquefaction behavior; Natural silty samples;
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