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http://dx.doi.org/10.7843/kgs.2009.25.5.75

Elastic Wave Characteristics According to Cementation of Dissolved Salt  

Eom, Yong-Hun (School of Civil, Environmental and Architectural Engineering, Korea Univ.)
Truong, Q. Hung (School of Civil, Environmental and Architectural Engineering, Korea Univ.)
Byun, Yong-Hoon (School of Civil, Environmental and Architectural Engineering, Korea Univ.)
Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.25, no.5, 2009 , pp. 75-86 More about this Journal
Abstract
Salt, one of the most common soluble materials in engineering soil, may have an effect on mechanical behaviors of soils under its cementation process. In order to investigate this natural phenomenon, non-soluble material by using glass beads is mixed with salt electrolyte and cemented by using oven to evaporate water. Three different sizes of glass bead particles, 0.26, 0.5, and 1.29 mm, with different salt concentration, 0, 0.1, 0.2, 0.5, 1.0, and 2.0M, are explored by using P- and S-waves, excited by bender elements and piezo disk elemets, respectively. The velocities of the P-wave and S-wave of the particulate medium cemented by salt show three stages with the degree of saturation: 1) S-wave velocities increase while P-wave velocities reduce with degree of saturation changing from 100% to 90%; 2) Both velocities are stable with degree of saturation varying from 90% to 10%; 3) The velocities change enormously when the specimens are nearly dry with degree of saturation from 10% to 0%. Besides, the resonance frequencies of S-wave show similar stages to the S-wave velocities. This study demonstrates meaningful trends of elastic wave characteristics of geo-materials according to the cementation of dissolved salt.
Keywords
Cementation; Compression wave; Resonant frequency; Share wave; Stiffness;
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Times Cited By KSCI : 2  (Citation Analysis)
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