Browse > Article
http://dx.doi.org/10.7843/kgs.2011.27.10.045

Consolidation Characteristics of Clay and Pond Ash Soil Mixture  

Chae, Deok-Ho (Dept. of Civil & Environmental Engineering, Dankook Univ.)
Yune, Chan-Young (Dept. of Civil Engineering, Gangneung-Wonju Univ.)
Kim, Kyoung-O (Civil Research Team, Daewoo E&C)
Cho, Wan-Jei (Dept. of Civil & Environmental Engineering, Dankook Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.27, no.10, 2011 , pp. 45-54 More about this Journal
Abstract
In this study, the consolidation characteristics are investigated on the artificial soil mixture of kaolinite, fine soils representing dredged soils and reclaimed coal ash from the ash ponds. A large sedimentation chamber was designed and manufactured to produce the artificial soil mixture with uniform stress history. In order to examine the consolidation characteristics in lateral and vertical directions, standard consolidation and Rowe Cell tests were performed. From the results of standard consolidation tests, the artificial soil mixture with coal ash showed lower compressibility and the larger consolidation coefficients enough to aid in early stabilization of the reclaimed sites compared with the kaolinite only. Also, in order to examine the consolidation characteristics when applying vertical drains, the drainage material was installed and tested in the Rowe Cell. The Rowe Cell test results show that the artificial soil mixture yields higher coefficient of consolidation. Thus, the application of artificial soil mixture on the reclaimed sites can shorten the consolidation time.
Keywords
Consolidation; Dredged soil; Reclamation; Rowe cell; Soil mixture;
Citations & Related Records
연도 인용수 순위
  • Reference
1 환경부(2008), "제4차 자원재활용 기본계획", pp.100-102.
2 Churchill, E. V., Amirkhanian, S. N. (1999), "Coal Ash Utilization in Asphalt Concrete Mixtures", Journal of Energy Engineering, Vol.11, No.4, pp.295-301.
3 Head, K. H.(1985), Manual Soil Laboratory Testing Vol.3, pp. 1129-1190.
4 Holtz, R. D., Kovacs, W. D. (1981), An Introduction to Geotechnical Engineering, pp.342.
5 Kim, B. J., Prezzi, M., Salgado, R. (2005), "Geotechnical Properties of Fly and Bottom Ash Mixtures for Use in Highway Embankments", Journal of Geotechnical and Geoenvironmental Engineering, Vol.131, No.7, pp.914-924.   DOI   ScienceOn
6 Rowe, P. W.(1964), "The calculation of the consolidation rates of laminated, varved or layered clays, with particular reference to sand drains", Geotechnique, Vol.14, No.4, pp.321-340.   DOI
7 한국재활용협회 홈페이지 (2011), http://www.coalash.or.kr/
8 김학삼, 홍성완, 조삼덕, 김종학(1995), "성토재로서 석탄회 사용 에 따른 수질오염도평가", 한국지반공학회집, Vol.11, No.3, pp.5-15.
9 윤찬영, 정충기, 양봉근(2006). "일정변형률 압밀시험을 이용한 방사 내측배수 압밀해석", 대한토목학회논문집, Vol.26, No.5C, pp.333-342.
10 천병식, 오민열, 임해식, 최현석(1996), "석탄회의 토공재로서의 활용에 관한 연구", 한국지반공학회집, Vol.12, No.1, pp.73-85.