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http://dx.doi.org/10.7843/kgs.2013.29.3.61

Permeability and Consolidation Characteristics of Clayey Sand Soils  

Kim, Kwangkyun (Samsung C&T)
Park, Duhee (Dept. of Civil and Environmental Engineering, Hanyang Univ.)
Yoo, Jin-Kwon (Dept. of Civil and Environmental Engineering, Hanyang Univ.)
Lee, Janggeun (Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Geotechnical Society / v.29, no.3, 2013 , pp. 61-70 More about this Journal
Abstract
Evaluation of permeability and coefficient of consolidation of clayey sand is critical in analyzing ground stability or environmental problems such as prediction of pollutant transport in groundwater. In this study, permeability tests using a flexible wall permeameter are performed to derive the coefficient of consolidation and permeability of reconstituted soil samples with various mixing ratios of kaolin clays and two different types of sands, which are Jumunjin and Ottawa sands. The test results indicate that the coefficient of consolidation and permeability plots linearly against clay contents in semi-log scale graphs for low clay mixing ratios ranging between 10 to 30%. It is also demonstrated that coefficient of consolidation and permeability of sand and clay mixture are dependent on the soil structure. Contrary to previous findings, the permeability is shown to be independent of the void ratio at low mixing ratios, which can be classified as non-floating fabric. The permeability decreases with the void ratio for floating fabric.
Keywords
Clayey sand; Coefficient of consolidation; Floating fabric; Permeability; Skeleton void ratio;
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