Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Strength Characteristics of Low Cement Ratio Soil Stabilizer Using Industrial By-products

산업부산물을 이용한 저시멘트계 지반개량재의 강도 특성

  • Cho Jin-Woo (Dept. of Geotechnical Engrg., KICT) ;
  • Lee Yong-Soo (Dept. of Geotechnical Engrg., KICT) ;
  • Yu Jun (Dept. of Geotechnical Engrg., KICT) ;
  • Kim Sei-Ho (PLUS Environment Construction Co., LTD.)
  • 조진우 (한국건설기술연구원 지반연구부) ;
  • 이용수 (한국건설기술연구원 지반연구부) ;
  • 유준 (한국건설기술연구원 지반연구부) ;
  • 김세호 (플러스환경건설(주))
  • Published : 2006.04.01
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Abstract

An experimental investigation was carried out to evaluate the strength characteristics of low cement ratio soil stabilizer. The low cement ratio soil stabilizer has been developed by the replacement of certain part of cement with by-product pozzolanic materials such as blast furnace slag, fly ash, waste gypsum and by using activator. A series of unconfined compressive strength tests were performed to investigate and obtain high-strength composite soil stabilizer with large amounts of blast furnace slag and fly ash. Test results show that there were better properties when blast furnace slag, fly ash, waste gypsum, and activator were added in proper ratio. The replacement of certain part of cement with by-product pozzolanic materials improved the strength and pore structure properties.

본 연구에서는 산업부산물을 이용한 저시멘트계 지반개량재의 강도특성을 고찰하였다. 저시멘트계 지반개량재는 시멘트의 일정부분을 대표적인 포졸란 물질인 고로슬래그, 플라이애쉬, 석고 등의 산업부산물과 활성제를 이용하여 대체함으로써 제조하였다. 일축압축강도 실험을 통하여 포졸란 물질의 반응성을 고찰하였으며 최적의 강도를 나타내는 구성조합을 도출하였다. 실험결과 시멘트의 사용량을 감소시키고 적절한 량의 산업부산물과 활성제를 첨가한 결과 강도가 증가하고 시료구조가 밀실화 되는 것을 확인할 수 있었다.

Keywords

References

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