KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Settling and Consolidation Behaviour of Cohesive Soil Slurry

점토슬러리의 침강 및 압밀 거동에 관한 연구

  • 이명호 ((주)한준지오텍 토양환경연구팀) ;
  • 김대호 (한양대학교 대학원 토목공학과) ;
  • 김수삼 (한양대학교 공과대학 토목공학과)
  • Received : 2007.04.04
  • Accepted : 2008.04.13
  • Published : 2008.05.31
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Abstract

This paper demonstrates settling and further consolidation behaviour of dredged clayey soils during landfilling. The effects of initial moisture content, electrolyte type and concentration on settling and consolidation behaviour were examined and evaluated by laboratory column tests. Electrokinetic tests were carried out with modified settling column to compare the soil behaviour under the gravity. From the testing results, the settling velocity increased due to the effects of cations in the electrolyte solution, and electrically induced settlements were found to be greater than those under the gravity.

점토질 입자를 다량으로 포함하는 준설토의 매립 시 발생하는 침강 및 압밀 거동에 대하여 조사하고자 일련의 실내실험을 수행하였다. 카올린 점토를 사용하여 초기함수비, 전해질의 종류 및 농도 등 다양한 조건에서 침강실험을 실시하였으며, 침강을 촉진하고 압밀에 의한 체적감소를 극대화하기 위하여 동전기프로세스를 채택하여 자연 상태의 침강 및 압밀 거동과 비교 분석하였다. 실험 결과 전해질 용액에 존재하는 다양한 양이온의 영향으로 침강속도가 증가하였으며, 자연 상태의 침강거동에 비해 동전기적 침강의 경우 더 많은 침하량을 유발시켰으며 함수비의 감소를 확인하였다.

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