Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Alternative Methods for Classification on Weathered Strata

풍화토층의 구분을 위한 시험법의 적용

  • 손영환 (위스콘신주립대학교 토목및환경공학과 연구원) ;
  • 노수각 (서울대학교 지역시스템공학과) ;
  • 김성필 (서울대학교 지역시스템공학과) ;
  • 장병욱 (서울대학교 지역시스템공학과)
  • Published : 2009.05.31
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Abstract

The undisturbed specimens used in this research were sampled in the field by the sequential sampling method. In addition, four testing methods were applied to identify for the characteristics and classification of weathered strata. N-value by standard penetration test was obtained from in the field and then analyzed using normalization method. Other methods such as X-ray grain size distribution, X-ray fluorescence spectroscopy(XRF), and fall cone test were carried out in the lab. These analyzed results indicate that distribution of particle, composition of minerals are changed in accordance with the degree of weathering, unusual strata and depth. Consequently, the weathered strata can be extensively separated into two parts according to the test results and each part was shown different in the strata characteristics. It can be prospected that mechanical characteristics should be different, even though mechanical tests were not applied. Furthermore, these results not only make up for the error by one testing method but also contribute more effectively and economically to the design and the construction.

Keywords

References

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