Determination of porosity distributions of water saturated granular media using spatial time domain reflectometry (Spatial TDR)

Scheuermann, Alexander (2012) Determination of porosity distributions of water saturated granular media using spatial time domain reflectometry (Spatial TDR). Geotechnical Testing Journal, 35 3: 441-450. doi:10.1520/GTJ103056

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Author Scheuermann, Alexander
Total Author Count Override 1
Title Determination of porosity distributions of water saturated granular media using spatial time domain reflectometry (Spatial TDR)
Journal name Geotechnical Testing Journal   Check publisher's open access policy
ISSN 0149-6115
1945-7545
Publication date 2012-05
Sub-type Article (original research)
DOI 10.1520/GTJ103056
Volume 35
Issue 3
Start page 441
End page 450
Total pages 10
Place of publication Conshohocken, PA, United States
Publisher A S T M International
Collection year 2013
Language eng
Abstract A sensor has been developed for the investigation of erosion processes in cylindrical specimens that permits the determination of porosity distributions using spatial time domain reflectometry (spatial TDR). Spherical glass beads saturated with water were used as a model material. The porosity was varied by mixing different size glass beads, and a physical mixing rule was optimized to determine a temperature dependent calibration function between dielectric permittivity and porosity. Homogeneous specimens were used to calibrate the sensor. An inversion algorithm was used for the analysis of the TDR signals. Both the sensor and the procedure were tested using specimens of glass beads comprised of layers with different porosities. The comparison between the measured and predefined porosity distributions shows satisfactory agreement.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2013 Collection
 
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Created: Thu, 14 Jun 2012, 11:36:35 EST by Julie Hunter on behalf of School of Civil Engineering