Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2009.03a
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- Pages.255-264
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- 2009
Stiffness Characteristics according to Salt Cementation
소금 고결화에 따른 강성 특성
- Eom, Yong-Hun (School of Civil, Environmental and Architectural Engineering, Korea University) ;
- Truong, Q. Hung (School of Civil, Environmental and Architectural Engineering, Korea University) ;
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Yoo, Joung-Dong
(School of Civil, Environmental and Architectural Engineering, Korea University) ;
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Byun, Yong-Hoon
(School of Civil, Environmental and Architectural Engineering, Korea University) ;
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Lee, Jong-Sub
(School of Civil, Environmental and Architectural Engineering, Korea University)
- 엄용훈 (고려대학교 건축사회환경공학부) ;
- 쭝꽝훙 (고려대학교 건축사회환경공학부) ;
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유정동
(고려대학교 건축사회환경공학부) ;
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변용훈
(고려대학교 건축사회환경공학부) ;
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이종섭
(고려대학교 건축사회환경공학부)
- Published : 2009.03.27
Abstract
Soils containing vanishing materials lead changes in the microstructure of particulate media due to water inflow. Thus, dissolution renders some local unstability. As the moisture contents decease, the component of the vanished materials may affects on the cementation of paniculate materials. This cementation phenomenon has a huge influence on the stiffness, strength and stability under lower stress level. The goal of this study is to introduce the cementation effects on a compressional wave velocity, a shear wave velocity, and the resonant frequency of shear waves. The glass bead and salt water with different mole contents are used. Test results show that the changes of shear and compressional wave velocities consist of three stages. In the first region, compressional wave velocities increase and shear wave velocities decrease with a decreases in reducing water contents from 100% to 90~95%. In the second region, shear and compressional wave velocities become stable at 90~95% to 10% of the water contents. In the third region, shear and compressional wave velocities increases dramatically with a decrease in the water content due to the capillary force and cementation of salt. Furthermore, the resonant frequency of the shear waves shows similar phenomenon. Specimens prepared by glass beads and salt water are proved to be able to provide a meaningful insight in under structural behaviors of the cementation.