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http://dx.doi.org/10.12652/Ksce.2013.33.3.1063

Variation in Characteristics of Elastic Waves in Frozen Soils According to Degree of Saturation  

Park, Jung-Hee (School of Civil, Environmental and Architectural Engineering, Korea University)
Kang, Min-Gu (School of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.33, no.3, 2013 , pp. 1063-1075 More about this Journal
Abstract
The strength of frozen soils is one of the significant design parameters for the construction in frozen ground. The properties of frozen soils should be investigated to understand the strength of frozen soils. The objective of this study is to figure out the characteristics of elastic waves in frozen soils, which reflect the constituent and physical structure of frozen soils in order to provide fundamental information of those according to the degree of saturation. Freezing cell is manufactured to freeze specimens, which are prepared with the degree of saturation of 10%, 40%, and 100%. Piezo disk elements are used as the compressional wave transducers and Bender elements are used as the shear wave transducers. While the temperature of specimens changes from $20^{\circ}C$ to $-10^{\circ}C$, the velocities, resonant frequencies and amplitudes of the compressional and shear waves are investigated based on the elastic wave signatures. Experimental results reveal that the elastic wave velocities increase as the degree of saturation increases. The variation of resonant frequencies coincide with that of elastic wave velocities. A marked discrepancy in amplitudes of compressional and shear waves are observed at the temperature of $0^{\circ}C$. This study renders the basic information of elastic waves in frozen soils according the degree of saturation.
Keywords
Compressional waves; Degree of saturation; Frozen soils; Elastic wave amplitudes; Resonant frequencies; Shear waves;
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Times Cited By KSCI : 5  (Citation Analysis)
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