Evaluation of dielectric properties of concrete by a numerical FDTD model of a GPR coupled antenna : Parametric study

This article describes the use of a 1.5 GHz ground-penetrating radar (GPR) coupled antenna numerical model to evaluate the dielectric properties of two concretes with different degrees of water saturation. The dielectric properties obtained by simulation and measurement are in a good accordance and are comparable with those of the literature. A parametric study is performed in order to better understand the wave propagation when the antenna is coupled with concrete. A study of the direct wave behavior during its propagation is also given.

[1]  G. Klysz,et al.  Simulation of direct wave propagation by numerical FDTD for a GPR coupled antenna , 2006 .

[2]  Gerardo Clemeña.  Short-Pulse Radar Methods , 2003 .

[3]  I. Al-Qadi,et al.  Characterization of Portland cement concrete using electromagnetic waves over the microwave frequencies , 1998 .

[4]  G. Klysz,et al.  Spectral analysis of radar surface waves for non-destructive evaluation of cover concrete , 2004 .

[5]  W. Bouten,et al.  Soil water content measurements at different scales: accuracy of time domain reflectometry and ground-penetrating radar , 2001 .

[6]  G. Arliguie,et al.  Ability of the direct wave of radar ground-coupled antenna for NDT of concrete structures , 2006 .

[7]  Steve Millard,et al.  Field pattern characteristics of GPR antennas , 2002 .

[8]  Steve Millard,et al.  Dielectric properties of concrete and their influence on radar testing , 2000 .

[9]  David J. Daniels,et al.  Surface-Penetrating Radar , 1996 .

[10]  G. Klysz.  Caractérisation du béton d'enrobage par technique radar : exploitation de l'onde directe émetteur-récepteur , 2004 .

[11]  Kiran S. Pokkuluri,et al.  Effect of Admixtures, Chlorides, and Moisture on Dielectric Properties of Portland Cement Concrete in the Low Microwave Frequency Range , 1998 .

[12]  J. Rhazi,et al.  Non-destructive evaluation of concrete moisture by GPR: Experimental study and direct modeling , 2005 .

[13]  Chi-Chih Chen,et al.  Near-field dipole radiation dynamics through FDTD modeling , 2003 .

[14]  Jean-Claude Dubois,et al.  Analysis of GPR data: wave propagation velocity determination , 1995 .