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

Korean Geotechnical Society (한국지반공학회)
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Engineering Properties of the Light Weight Soil Mixed with Phosphogypsum and Recycled EPS Beads

인산석고와 폐 EPS Beads를 혼합한 경량토의 공학적 특성

  • Suh, Dong-Eun (Div. of Civil & Env. Eng., Chonnam National University) ;
  • Kim, Young-Sang (Div. of Civil & Env. Eng., Chonnam National University) ;
  • Lee, Woo-Bum (Div. of Civil & Env. Eng., Chonnam National University) ;
  • Kim, Won-Bong (Div. of Civil & Env. Eng., Chonnam National University) ;
  • Yu, Bong-Sun (Namhae Chemical Corp.)
  • 서동은 (전남대학교 건설.환경공학부) ;
  • 김영상 (전남대학교 건설.환경공학부) ;
  • 이우범 (전남대학교 건설.환경공학부) ;
  • 김원봉 (전남대학교 건설.환경공학부) ;
  • 유봉선 (남해화학(주) 영선관리팀)
  • Published : 2008.10.10
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Abstract

The objective of this research is an investigation of engineering properties of weathered granite soil mixed with Phosphogypsum and recycled EPS beads as an light-weighted soil. A series of geotechnical laboratory tests including physical index test, compaction test, CBR test and direct shear test were performed for various mixing ratios. Based on the laboratory test results, it was found that the maximum dry unit weight of the light weight soil ranges $1.46{\sim}1.61g/cm^3$ and the maximum dry unit weight decreases about 11~19.3% with the increase of amount of the recycled EPS beads and the optimum moisture content increase. Since the CBR values of the light weight soil ranges 10.4~18.4%, the light weight soil mixed with Phosphogypsum and recycled EPS beads can be used as a light weight backfill material on the soft soil.

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