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Permeability Characteristics of Clays with Various pH Values  

장병욱 (서울대학교 농업생명과학대학)
강상욱 (서울대학교 대학원)
김성필 (서울대학교 대학원)
차경섭 (서울대학교 대학원)
Publication Information
Magazine of the Korean Society of Agricultural Engineers / v.44, no.6, 2002 , pp. 99-105 More about this Journal
Abstract
A series of physical properties and rigid wall permeability tests were performed on two clays to investigate changes in permeability characteristics of clays with various pH values. Results of the study are as follows. As pH values were increased, coefficients of permeability of S-clay(clay fraction 18%) and J-clay(clay fraction 30%) were decreased in 3 and 4 times, respectively. Variation of coefficient of permeability of J-clay was considerably related to clay fraction. It can be said that coefficient of permeability of clays tested was increased, as pH values were decreased. This was because of increase in effective voids caused by decrease in thickness of diffused double layer, that is, change in soil structures and effective grain sizes.
Keywords
pH; Permeability; Clay;
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