Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2009.09a
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- Pages.412-419
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- 2009
Selection of the optimum mixture condition for stabilization of Songdo silty clay
송도 지역 해양성 점토 고화처리를 위한 최적배합 조건의 선정
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Kim, Jun-Young
(Dept. of Civil and Environmental Engineering, Soeul Natl. University) ;
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Jang, Eui-Ryong
(Dept. of Civil and Environmental Engineering, Soeul Natl. University) ;
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Chung, Choong-Ki
(Dept. of Civil and Environmental Engineering, Soeul Natl. University) ;
- Lee, Yong-Jun (POSCO Engineering & Construction R&D CENTER) ;
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Jang, Soon-Ho
(POSCO Engineering & Construction R&D CENTER) ;
- Choi, Jung-Yeul (POSCO Engineering & Construction Architecture Division)
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김준영
(서울대학교 건설환경공학부) ;
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장의룡
(서울대학교 건설환경공학부) ;
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정충기
(서울대학교 건설환경공학부) ;
- 이용준 ((주) 포스코건설 기술연구소) ;
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장순호
((주) 포스코건설 기술연구소) ;
- 최정렬 ((주) 포스코건설 건축사업본부)
- Published : 2009.09.25
Abstract
Large quantity of extra soils discharged from excavation site in Songdo area can be treated by hardening agents and utilized in surface stabilized layer overlying thick reclaimed soft soil deposit. Though surface layer stabilization method using cement or lime for very soft soils has been studied in recent years, but studies on moderately soft clayey silt has not been tried. The purpose of this research is to investigate optimum mixing condition for stabilizing Songdo marine soil with low plasiticity. The optimum mixing conditions of hardening agents with Songdo soil such as kind of agents, mixing ratio, initial water content and curing time are investigated by uniaxial compression test and laboratory vane test. The results indicate that strength increases with high mixing ratio and long curing time, while decreases drastically under certain water content before mixing. Finally, optimum mixing condition considering economic efficiency and workability with test results was proposed.