한국지반공학회논문집 (Journal of the Korean Geotechnical Society)

  • 제28권9호
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  • Pages.85-95
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  • 2012
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  • 1229-2427(pISSN)
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  • 2288-646X(eISSN)
한국지반공학회 (Korean Geotechnical Society)
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친환경 유기산 재료를 활용한 지반개량 공법의 현장 적용성 평가

The Evaluation of the Field Applicability of the Soil Improving Method Using the Environment-friendly Organic Acid Material

  • 이종휘 (한양대학교 건설환경공학과) ;
  • 홍종욱 (한양대학교 건설환경공학과) ;
  • ;
  • 천병식 (한양대학교 건설환경공학과)
  • Lee, Jong-Hwi (Dept. of Civil and Environmental Engineering, Hanyang Univ.) ;
  • Hong, Jong-Ouk (Dept. of Civil and Environmental Engineering, Hanyang Univ.) ;
  • Jin, Youngguo (Dept. of Civil and Environmental Engineering, Hanyang Univ.) ;
  • Chun, Byung-Sik (Dept. of Civil and Environmental Engineering, Hanyang Univ.)
  • 투고 : 2012.06.24
  • 심사 : 2012.08.10
  • 발행 : 2012.09.28
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초록

유기산 재료를 이용한 지반 개량은 미생물을 배양하여 지반의 고결화로 인해 친환경적으로 지반의 강도를 증대시키는 방법으로 다양한 토질 성상에 대해 유기산 재료를 혼합 후 미생물 증식으로 강도 증대효과를 규명한 바가 있으나, 현재까지 현장 적용성을 평가한 바가 없다. 본 논문에서는 유기산재료를 이용하여 지반의 미생물 증식으로 인한 지반 고결화에 대해 연구를 실시하였으며, 이를 위해 재령 56일까지 동평판재하시험, 동적콘관입시험, 들밀도시험, SEM-EDS분석을 통해 지반강도의 변화에 대해 규명하였다. 시험 결과, 유기산 재료를 첨가한 지반의 강도와 강성은 증가하는 경향을 나타냈으며, SEM-EDS로부터 탄산칼슘의 증가를 규명할 수 있었다. 향후 유기산 재료를 활용한 친환경적인 지반개량 공법의 지속적인 연구와 관심이 필요하다고 사료된다.

The method of using organic acid is more environment-friendly for it improves the strength of the ground. The method of proliferating microbes makes soil particle bonded, finally improves the strength of the ground and decreasing permeability. Although there has been the research on the effect of strength increasing, there has never been a research on the evaluation of field application. In this paper, through the light drop weight test, the dynamic cone penetration test, the field density test, the variation of strength was investigated in the mixed ground with organic acid for 56 days. As the results of the field test, it was found that the strength and stiffness of the ground increased with organic acid, and that through SEM-EDS, the precipitation of calcium carbonate made by specified microbe obviously increased with organic acid material and so the ground was improved. Therefore, the sustainable development of this method needs to be analysed more in the future.

키워드

참고문헌

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