Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Application of Penetration in Fall Cone Test to Estimate Relative Density with Variation of Water Content for Sand

함수비를 고려한 모래의 상대밀도 추정을 위한 Fall Cone 관입량의 적용

  • 최우석 (서울대학교 조경.지역시스템공학부 대학원) ;
  • 손영환 (서울대학교 조경.지역시스템공학과, 서울대학교 농업생명과학연구원) ;
  • 박재성 (서울대학교 조경.지역시스템공학부 대학원) ;
  • 노수각 (서울대학교 조경.지역시스템공학부 대학원) ;
  • 봉태호 (서울대학교 조경.지역시스템공학부 대학원)
  • Received : 2012.06.04
  • Accepted : 2012.08.28
  • Published : 2012.09.30
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Abstract

Relative density, used to express dynamics condition of sand quantitatively, is measured by RI Test, Standard Penetration Test and Cone Penetration Test. Each measurement method has demerits, which is complicated or needs a specific analysis instrument and an analysis of expert. Also the ground is in wet condition commonly because of an unsaturated zone between a saturated zone and a surface, so the behaviour of the ground has different engineering properties unlike the dry ground and it diminishes accuracy of measuring relative density. In this study, the correlation between relative density and penetration of fall cone test in dry condition and wet condition with variation of water content was analyzed and a simple measuring method for relative density was suggested. As a result, there were difference of penetration between dry sands and wet sands, the correlation between relative density and penetration showed linear expression and relative density could be measured by the linear relation.

Keywords

References

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