Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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Stiffness Characteristics of Salt Cementation according to Depth

깊이에 따른 소금의 고결화 강성특성

  • Eom, Yong-Hun (Dept. of Tunnel Engineering, Dongmyeong Engineering) ;
  • Byun, Yong-Hoon (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Truong, Q. Hung (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea University)
  • 엄용훈 (동명기술공단 터널부) ;
  • 변용훈 (고려대학교 건축사회환경공학부) ;
  • 쭝꽝훙 (고려대학교 건축사회환경공학부) ;
  • 이종섭 (고려대학교 건축사회환경공학부)
  • Published : 2009.09.25
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Abstract

Cementation phenomenon has a huge influence on geotechnical stiffness and strength under low confining pressure. The goal of this study is to evaluate the characteristics of stiffness according to the depth. The piezo disk elements are installed at each layer of the cell for the detection of the compressional waves. The change of compressional wave velocity is classified by three stages. The compressional wave velocities are shown different according to the depth. The compressional wave velocity is especially influenced by cementation, effective stress, and coordinate number. Furthermore, the electrical conductivity and cone tip resistance are measured according to the depth. The electrical conductivity and the cone tip resistance show the similar trend with the compressional wave velocity. This study shows that the cementation by salt is affected by the depth on the granular materials.

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