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

Korean Geotechnical Society (한국지반공학회)
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Comparison of Geotechnical Characteristics of Bottom Ash for Lightweight Fill Material

경량 성토재 활용을 위한 석탄 저회 물성 비교

  • 김윤기 (한국철도기술연구원 철도구조연구실) ;
  • 이성진 (한국철도기술연구원 철도구조연구실) ;
  • 신민호 (한국철도기술연구원 철도구조연구실) ;
  • 이승래 (KAIST 건설및환경공학과) ;
  • 이용식 (한국철도기술연구원 철도구조연구실)
  • Published : 2010.03.25
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Abstract

Mechanical characteristics of bottom ash produced in coal-fired power plant are investigated to utilize as light-weight fill materials. Triaxial compression test, water retention test, and unsaturated direct shear test were conducted for weathered soil (WS), reclaimed bottom ash (RBA), and screened bottom ash (BA). RBA had larger frictional angle and lower effective cohesion than those of WS. Water retention charactersitics of RBA and BA existed within distributions of soil-water characteristic curves for domestic weathered soils. Unsaturated shear strength of RBA was similar to that of WS at matric suctions of 50 kPa and 100 kPa. As a conclusion, bottom ash can be used as fill materials to replace the conventional construction materials by.

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