doi: 10.7763/IJET.2014.V6.728
Broadband Dielectric Measurement Methods for Soft Geomaterials: Coaxial Transmission Line Cell and Open-Ended Coaxial Probe
Z. Chen
,
M. Schwing
,
J. Karlovšek
,
N. Wagner
,
A. Scheuermann
- Institute of Material Research and Testing (MFPA)
Abstract
Broadband dielectric measurement methods basedon vector network analyzer coupled with coaxial transmissionline cell (CC) and open-ended coaxial probe (OC) are simplyreviewed, by which the dielectric behaviors in the frequencyrange of 1 MHz to 3 GHz of two practical geomaterials areinvestigated. Kaolin after modified compaction with differentwater contents is measured by using CC. The results areconsistent with previous study on standardized compactedkaolin and suggest that the dielectric properties at frequenciesbelow 100 MHz are not only a function of water content but alsofunctions of other soil state parameters including dry density.The hydration process of a commercial grout is monitored inreal time by using OC. It is found that the time dependentdielectric properties can accurately reveal the different stagesof the hydration process. These measurement resultsdemonstrate the practicability of the introduced methods indetermining dielectric properties of soft geomaterials.
Keywords
- Dielectric spectroscopy
- open-ended coaxialprobe
- coaxial transmission line
- real-time monitoring
- physicochemical properties of geomaterials
How to Cite
Z. Chen, M. Schwing, J. Karlovšek, N. Wagner, and A. Scheuermann, "Broadband Dielectric Measurement Methods for Soft Geomaterials: Coaxial Transmission Line Cell and Open-Ended Coaxial Probe," International Journal of Engineering and Technology, vol. 6, no. 5, pp. 373-380, 2014. https://doi.org/ 10.7763/IJET.2014.V6.728
Copyright & License
Copyright © 2014 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).