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http://dx.doi.org/10.9720/kseg.2021.4.493

Analysis of the Characteristics of Liquidization Behavior of Sand Ground in Korea Using Repeated Triaxial Compression Test  

Seo, Hyeok (Kyungdong Construction Engineering Co., Ltd.)
Kim, Daehyeon (Department of Civil Engineering, Chosun University)
Publication Information
The Journal of Engineering Geology / v.31, no.4, 2021 , pp. 493-506 More about this Journal
Abstract
Liquefaction refers to a phenomenon in which excessive pore water pressure occurs when a dynamic load such as an earthquake rapidly acts on a loose sandy soil saturated with soil, and the ground loses effective stress and becomes liquefied. The indoor repeated test for liquefaction evaluation can be confirmed through the repeated triaxial compression test and the repeated shear test. In this regard, this study tried to confirm the liquefaction resistance strength according to the relative density and particle size distribution of sand using the repeated triaxial compression test. As a result of the experiment, it was confirmed that the liquefaction resistance strength increased as the relative density increased regardless of the soil classification, and the liquefaction resistance strength according to the particle size distribution of the sand was confirmed that the liquefaction resistance strength of the SP sample close to SW was significantly higher. In addition, as a result of analyzing 30% of fine powder compared to 0% of fine powder, as the relative density increased to 40~70%, the liquefaction resistance strength decreased by 5~20%, and the domestic weathered soil ground had a fine liquefaction resistance strength compared to Jumunjin standard sand. When the minute was 10%, it was measured to be 30% or more, and when the fine particle was 30%, it was measured to be less than 50%.
Keywords
expansion material; foam reaction; uniaxial compression test; direct shear test; permeability test;
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Times Cited By KSCI : 1  (Citation Analysis)
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