Evaluation of Moisture Content in Concrete with Microwave

Article Preview

Abstract:

Generally, any chemical or physical change in a material may cause variation in its permittivity and permeability. The propagation of microwave through the material can be affected by these variation in properties. The analysis of microwave propagation through materials may therefore provide a means for condition monitoring. This paper utilizes a one-dimensional scenario, demonstrating the feasibility to link measurable reflection and transmission coefficients of microwave to concrete permittivity and permeability, which are essentially associated with water content in concrete. As a result, water content can then be monitored through the measurement of these coefficients. The study also demonstrates the feasibility of using the same technique to estimate the thickness of the concrete that microwave propagates through.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

311-318

Citation:

Online since:

June 2006

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2006 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] X. Wang and G. Foliente: Deterioration of Reinforced Concrete Bridge Structures (CSIRO CMIT Doc 03-038, 2003, Highett, Victoria. Australia).

Google Scholar

[2] A.M. Neville: Properties of Concrete, Fourth Edition (Pearson Education Limited, England, 1999).

Google Scholar

[3] Thoft-Christensen: Proc. 2nd International Workshop on Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems, Japan, 27-29 September 2001, eds A. Miyamoto and D. Frangopol, p.35.

Google Scholar

[4] S.R. Lyer, S.K. Sinha and A.J. Schokker: Computer-Aided Civil and Infrastructure Engineering Vol. 20 (2005), p.79.

Google Scholar

[5] M. Soutsos, J. Bungey, S. Millard and S.M. Patterson: NDT&E International Vol. 34 (2001), p.419.

Google Scholar

[6] C. Maierhofer and J. Wostmann: NDT&E International Vol. 31 (1998), p.259.

Google Scholar

[7] H.M.A. Al-Mattarneh, D.K. Ghodgaonkar and W.M.B.W.A. Majid: Subsurface Sensing Technologies and Applications Vol. 2 (2001), p.377.

DOI: 10.1023/a:1013217017554

Google Scholar

[8] D.M. Pozar: Microwave Engineering, Second Edition (John Wiley & Sons, Inc., New York 1998).

Google Scholar

[9] S. Ramo, J. Whinnery and T. Van Duzer: Fields and Waves in Communication Electronics, Third Edition. (Wiley Publishing Inc., Indianapolis, 1994).

Google Scholar