Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Strength Prediction of Cement-Admixed using Low Plasticity Silt

저소성실트를 이용한 시멘트 혼합토의 강도 예측

  • Park, Jongchan (Department of Civil Engineering, University of Seoul) ;
  • Park, Minchul (Korea Institute of Construction Information) ;
  • Jeon, Jesung (Department of Construction Information Engineering, Induk University) ;
  • Jeong, Sangguk (Department of Civil Engineering, Songwon University) ;
  • Park, Kyunghan (Department of Civil Engineering, University of Seoul) ;
  • Lee, Song (Department of Civil Engineering, University of Seoul)
  • Received : 2014.04.15
  • Accepted : 2014.06.08
  • Published : 2014.07.01
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Abstract

For analysis of mechanics properties of soil cement, unconfined compressive strength has been proposed by existing case studies. In this study, mechanical changes with water content of silt, curing time and cement content were analyzed through unconfined compressive strength test. In addition, the changes for B factor by Abrams were compared with existing case studies after the prediction equations could be proposed about the unconfined compressive strength of admixed cement soil. Especially, the B constant factor was changed with soil characteristics and curing time. For analysis results of appropriateness status and unconfined compressive strength, consideration of variable form was titrated. The prediction equations at low plasticity silt admixed using the uniaxial compressive strength with applying Abrams's equation and considering cement content, curing time is proposed.

소일 시멘트 혼합토의 역학적 성질을 파악할 수 있는 인자로서는 일축압축강도로 기존 연구사례에서 제시되었다. 본 연구에서는 저소성실트를 이용한 시멘트 혼합토의 일축압축강도 시험을 통해 실트함수비, 재령일, 시멘트 함유율에 대한 역학적 변화를 분석하였으며, Abrams가 제안한 B계수에 대한 변화를 기존연구사례와 비교 분석 및 시멘트 혼합토의 일축압축강도 예측식도 제안하였다. 상수 B계수값은 토질의 특성 및 재령일 등에 따라 변화였으며, B계수 변화의 적정성 여부를 일축압축강도로 분석한 결과 변수형태의 고려가 적정한 것으로 나타났다. Abrams 방정식을 적용하고 재령일, 시멘트 함유율과 재령일을 고려한 저소성실트 혼합토의 일축압축강도 예측식을 제안하였다.

Keywords

References

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