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Environmental Engineering Research 2002;7(3): 121-127. DOI: https://doi.org/10.4491/eer.2002.7.3.121
HYDRAULIC CONDUCTIVITY OF COMPACTED SOIL-BENTONITE MIXTURE FOR A LINER MATERIAL IN LANDFILL FACILITIES
Won-Jin Cho, Jae-Owan Lee, and Chul-Hyung Kang
Korea Atomic Energy Research Institute P.O. Box 105, Yusong, Daejeon 305-606, Korea
Corresponding Author: Won-Jin Cho ,Tel: +82-42-868-2852, Fax: +82-42-868-8850, Email: wjcho@kaeri.re.kr
Received: March 20, 2002;  Accepted: June 20, 2002.
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ABSTRACT
The hydraulic conductivities of the soil-bentonite mixtures with several densities were measured, and the effects of bentonite content on the hydraulic conductivity of the mixture were investigated. The hydraulic conductivities of the soil-bentonite mixtures with dry densities of 1.4 Mg/m3 and 1.5 Mg/m3 were not significantly decreased with increasing bentonite content up to 20% by weight. However, for the mixtures with a dry density of 1.6 Mg/m3, the hydraulic conductivities decrease rapidly with increasing bentonite content, and were less than 10"" m/s when the bentonite content is higher than 10% by weight. The similar trend was obtained for the mixture with a dry density of 1.8 Mg/m3.
Keywords: bentonite content | compaction density | hydraulic conductivity | landfill | liner | soil-bentonite mixture
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