Embedded modulating dipole scattering for near-field microwave inspection of concrete: preliminary investigations

Alain Joisel; Karl J. Bois; Aaron D. Benally; Jean-Charles Bolomey; Reza Zoughi

doi:10.1117/12.365700

15 October 1999 Embedded modulating dipole scattering for near-field microwave inspection of concrete: preliminary investigations

Alain Joisel, Karl J. Bois, Aaron D. Benally, Jean-Charles Bolomey, Reza Zoughi

Author Affiliations +

Proceedings Volume 3752, Subsurface Sensors and Applications; (1999) https://doi.org/10.1117/12.365700
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Nondestructive evaluation of concrete structures is an important practical issue in the construction industry. Evaluation encompasses many issues including concrete constituent property, compressive strength and chloride contamination determination to name a few. To this end, a combination of modulated scattering technique and near-field microwave nondestructive evaluation technique, is used to determine its potential for evaluating dielectric properties of a hardened mortar specimen. This technique utilizes a small resonant PIN diode-loaded dipole scatterer embedded inside the mortar while using an open-ended rectangular waveguide probe operating at 7 GHz to detect this dipole which is modulated at low frequencies. The results of this preliminary experiment, and its future ramifications for nondestructive concrete inspection structures are provided in this paper.

Citation Download Citation

Alain Joisel, Karl J. Bois, Aaron D. Benally, Jean-Charles Bolomey, and Reza Zoughi "Embedded modulating dipole scattering for near-field microwave inspection of concrete: preliminary investigations", Proc. SPIE 3752, Subsurface Sensors and Applications, (15 October 1999); https://doi.org/10.1117/12.365700

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