EFFECT OF MIXING RATIO ON MEMBRANE BEHAVIOR OF CLAY-BENTONITE COMPOSITE MATERIAL
Compacted clay liners could be improved if they exhibit semi-permeable membrane behavior to restrict migration of contaminant.Bentonite already proved effective as additive to improve membrane behavior of clay.Thus in this research,one type of local clay (Fukakusa clay) amended with bentonite under different mixing ratio (0,5%,10%,15% and 20%) were evaluated for hydraulic conductivity and membrane behaviors.According to results,membrane behavior for clay was very low even neglected,although hydraulic conductivity k was suitably low (around 10-9 m/s).Besides,membrane behaviors were found to decrease continually as KCI concentration difference increased.The results suggest that compacted clay liners with natural clay exhibit hardly membrane behavior unless bentonite or other highly swelling soil is introduced.
Fukakusa clay bentonite membrane behaviors osmotic pressure KCI
Q.TANG T.KATSUMI T.INUI Z.Z.LI
Graduate School of Global Environmental Studies,Kyoto University,Yoshida campus,Sakyo-ku,Kyoto,606-8 Department of Civil Engineering,University of Ottawa,161 Louis Pasteur,Ottawa,ON,K1N 6N5,Canada
国际会议
5th China-Japan Geotechnical Symposium(第五届中日岩土工程学术会议)
成都
英文
407-410
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）