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Impact of Particle Sizes, Mineralogy and Pore Fluid Chemistry on the Plasticity of Clayey Soils

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Alternative Title
Impact of Particle Sizes, Mineralogy and Pore Fluid Chemistry on the Plasticity of Clayey Soils
Abstract
The current classification of clayey soils does not entail information of pore fluid chemistry and particle size less than 75 μm. However, the pore fluid chemistry and particle size (at given mineralogy) are critical in the plasticity of clayey soils because of their impact on negative charge density. Therefore, this study extensively discusses the description of clay with respect to mineralogy, particle sizes, and pore fluid chemistry based on liquid and plastic limits of kaolinite, illite, and bentonite, and estimates undrained shear strength from the observed liquid limits. The liquid limits and undrained shear strength estimated from the observed liquid limits as a function of mineralogy (clay type), particle size, and ionic concentration reveal the need of incorporating pore fluid chemistry and particle size into the fines classification system. Furthermore, multiple linear regression models developed in this study demonstrate the importance of particle size and ionic concentration in predicting the liquid limit of clayey soils. This study also discusses the need for a comprehensive understanding of fines classification for proper interpretation of natural phenomena and engineering applications for fine-grained sediments.
Author(s)
김준기박정희원종묵장준봉
Issued Date
2021
Type
Article
Keyword
claymineralogyparticle sizesoil classificationliquid limitpore fluid chemistry
DOI
10.3390/su132111741
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9203
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_doaj_primary_oai_doaj_org_article_e7bd98eeff484f4291c298d3e5e7bc68&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Impact%20of%20Particle%20Sizes,%20Mineralogy%20and%20Pore%20Fluid%20Chemistry%20on%20the%20Plasticity%20of%20Clayey%20Soils&offset=0&pcAvailability=true
Publisher
SUSTAINABILITY
Location
스위스
Language
영어
ISSN
2071-1050
Citation Volume
13
Citation Number
21
Citation Start Page
11741
Citation End Page
11741
Appears in Collections:
Engineering > Civil and Environmental Engineering
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