Factors Affecting the Electrical Properties of Bentonite Slurry

벤토나이트 슬러리의 전기적 특성에 대한 영향인자 분석

  • Yoo, Dong-Ju (Dept. of Civil, Urban & Geosystem Eng., Seoul National Univ.) ;
  • Oh, Myoung-Hak (Coastal Eng. Research Dept., Korea Ocean Research & Development Institute) ;
  • Kim, Yong-Sung (Dept. of Civil, Urban & Geosystem Eng., Seoul National Univ.) ;
  • Park, Jun-Boum (Dept. of Civil, Urban & Geosystem Eng., Seoul National Univ.)
  • 유동주 (서울대학교 지구환경시스템공학부) ;
  • 오명학 (한국해양연구원 연안개발연구본부) ;
  • 김용성 (서울대학교 지구환경시스템공학부) ;
  • 박준범 (서울대학교 지구환경시스템공학부)
  • Published : 2006.10.31

Abstract

Factors affecting the electrical properties of bentonite slurry were identified and electric conduction mechanism in slurry was examined. Electrical conductivity of bentonite and soil-bentonite slurry linearly increases with the bentonite content. Test result indicated that the change In electrical conductivity of slurry was mainly caused by dissolved cations from bentonite particles. The relationship between electrical conductivity and bentonite content was affected by the initial electrical conductivity of slurry solution and fine content in soil-bentonite mixture. Such influences were evaluated and the calibrated relationships were suggested. Based on the suggested relationship between electrical conductivity and bentonite content, bentonite content in various bentonite and soil-bentonite slurry can be quantitatively evaluated by using electrical conductivity measurement method.

References

  1. 오명학, 이기호, 박준범(2004), '함수비와 간극수 오염이 불포화 사질토의 전기비저항에 미치는 영향', 대한토목학회 논문집, 24, pp.27-34
  2. Abu-Hassanein, Z. S., Benson, C. H., Wang, X. and Blotz, L. R. (1996b), 'Determining Bentonite Content in Soil-bentonite Mixtures using Electrical Conductivity', Geotechnical Testing Journal, 19(1), pp.51-57 https://doi.org/10.1520/GTJ11407J
  3. Alther, G. R. (1982), 'The role of bentonite in soil dealing application', Bull. Assn. of Engrg., Geologists, 19, 401-409
  4. Appolonia, D., Christoper R. Ryan. (1979), Soil-bentonite Slurry Trench Cult-off Walls, Geotechnical Exhibition and Technical Conference Chicago Illinois, March 26 1979
  5. Curtis, J. and Narayanan, R. (1998), 'Effects of laboratory procedures on soil electrical property measurements', IEEE Transactions on Instrumentation and Measurement, 47(6), pp.1474-1480 https://doi.org/10.1109/19.746715
  6. Daniel, D. E. (1993), Clay liners, Geotechnical practice for waste disposal, D. E. Daniel, ed., Chapman & Hall, London, England, 137-163
  7. Kenney. T., Van Veen, W., Swallow, M., and Sungaila, M. (1992), 'Hydraulic Conductivity of Compacted Bentonite-Sand Mixtures', Canadian Geotechnical Journal, Vol. 29, pp,364-374 https://doi.org/10.1139/t92-042
  8. Klein, K (1999), Electromagnetic properties of high specific surface minerals, Ph.D. thesis, Department of Civil Engineering, Georgia Institute of Technology, USA
  9. Mitchell, J. K, Bary, J. D., and Mitchell, R. A. (1995), Material interactions in solid waste landfills, Geoenvironment 2000, Geotechnical Special Publication No. 46, ASCE, P. 568-590
  10. Reiger, P. H. (1987), Electrochemistry, Prentice-Hall, Inc
  11. Saarenketo, T. (1998), 'Electrical properties of water in day and silty soils', Journal of Applied Geophysics, 40, pp.73-88 https://doi.org/10.1016/S0926-9851(98)00017-2
  12. Santamarina, J. C. (2001), Soils and Waves, John Wiley & Sons
  13. Sawyer, C. N., McCarty, P. (1978), Chemistry for Environmental Engineering, 3th Ed., McGraw-Hill, New York
  14. Smith, S. S. and Arulanandan, K. (1981), 'Relationship of electrical dispersion to soil properties', Journal of the Geotechnical Engineering, ASCE, 107 (GT5), pp.591-604
  15. Van Olphen, H. (1977), An Introduction to Clay Colloid Chemistry, 2nd edition. John Wiley & Sons, New York
  16. Yoon, G. L., Oh, M. H. and Park, J. B. (2002), 'Laboratory study of landfill leachate effect on resistivity in unsaturated soil using cone penetrometer', Environmental Geology, 43(1-2), pp.18-28 https://doi.org/10.1007/s00254-002-0615-y