Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
권호 표지

Triaxial Compressive Behaviour of Unsaturated Silt under Different Drainage Conditions

다양한 경계조건에서의 불포화 실트의 삼축압축 거동

  • Kim, Young-Seok (Geotechnical Disaster and Environment Research, Korea Institute of Construction Technology) ;
  • Oka, Fusao (Department of Civil and Earth Resources Engineering, Kyoto University)
  • 김영석 (한국건설기술연구원 지반방재.환경연구실) ;
  • 오카 후사오 (교토대학 공학연구과 사회기반공학)
  • Published : 2008.03.28
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Abstract

It has been recognized unsaturated soil behaviour playing an important role in geomechanics. Up to now, only a few experimental data are available for the technical difficulties related to both volume changes and suction measurements. In this study, the volume changes of unsaturated compacted silty soil were monitored with proximeter (i.e. non-contactable transducer) during various triaxial compression tests, which gave a realistic estimation in the volume changes of unsaturated soil sample. Various triaxial compression tests for unsaturated soil under different drainage conditions are carried out. The behaviour of the pore pressure, namely, the pore-air pressure and the pore-water pressure, and matric suction during the shearing tests are investigated. The experimental results have revealed that the mechanical behaviour of unsaturated soil can be significantly affected by the matric suction.

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