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A Study on the Determination of Dielectric Constant of Saturated Porous Media Using Frequency Domain Reflectometry System  

김만일 (안동대학교 지구환경과학과)
정교철 (안동대학교 지구환경과학과)
Publication Information
The Journal of Engineering Geology / v.14, no.2, 2004 , pp. 179-187 More about this Journal
Abstract
This study conducted a laboratory work to determine the change of dielectric constant of saturated soil porous media, which is injecting EML to use Frequency Domain Reflectometry(FDR) system and length 7cm-length measurement sensor. It is purpose of study that estimate a movement path through pore of soil for an ethanol mixing liquid(EML) which have the same specific gravity of water at $20{\;}^{\circ}C$, and determine to a dielectric measuring range for the measurement sensor. As an outflow point of saturated soil column upper part recedes from an EML inject point in EML diffusion test, the diffusion extent of EML through pore of saturated soil was expanded. And results of ail EML flow experiment were measured the change of dielectric constant at all measurement sensors which are placed to constant interval at the same travel time for saturated soil column. Therefore, the displace process of water that exist in pore of saturated soil by EML injection is enough available and confirm together mobility through pores.
Keywords
Dielectric constant; Frequency Domain Reflectometry(FDR) system; Saturated soil; Ethanol Mixing Liquid(EML);
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Times Cited By KSCI : 1  (Citation Analysis)
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