By Topic

Broadband Propagative Microwave Imaging of Steel Fiber Reinforced Concrete Wall Structures

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Roqueta, G. ; Univ. Politec. de Catalunya, Barcelona, Spain ; Jofre, L. ; Romeu, J. ; Blanch, S.

In this paper, a system for the broadband microwave nondestructive testing of steel fiber reinforced concrete (SFRC) is presented. The system is able to produce a pixeled image of the fiber dosage in the concrete. The SFRC material is seen as a dielectric mixture formed by thin-wire metallic inclusions and a host medium. An electromagnetic model based on the Maxwell-Garnett approach for dielectric mixtures is used to relate the electromagnetic properties of the SFRC to the fiber dosage. A criterion to determine the practical upper frequency limit for the measurements is formulated. A measurement system based on two wideband waveguide antennas is designed for the analysis of two SFRC multiblock test structures. The electric capacitive host medium calibration is proposed in the cases where the concrete structures have parts fabricated with different processes. The laboratory measurements on the individual SFRC elements and on the SFRC multiblock structures are conducted to obtain the images of the fiber dosage in the SFRC. Good agreement between the real, simulated, and measured values is achieved.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:59 ,  Issue: 12 )