Ground penetrating radar (GPR) is one of the most extensively used nondestructive evaluation methods with rapid development in civil engineering in the past few years for its efficiency and high resolution. The evaluation mechanism of concrete materials using GPR is generally based on the reflected signals from the rebar. According to rebar reflections, the corrosion level of the rebar and the material deteriorating condition above the rebar can be deduced. GPR has been successfully applied to shallow subsurface rebar detection in concrete structures. However, very few literatures have addressed the detectability of reflected signal from the deeper layer of rebar. As the result, only a small shallow section of the bridge deck can be evaluated by GPR data so far. In this paper, the detectability of the deeper rebar layer in concrete bridge decks using GPR is investigated with the help of data processing and image processing techniques. The GPR data collected from both a simulation model and a test slab are used to demonstrate the proposed methods and the preliminary results show the reflected signals from the second layer of rebar can be extracted using proposed methods.
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ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 19–21, 2012
Stone Mountain, Georgia, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4509-7
PROCEEDINGS PAPER
An Investigation on the Detectability of Deeper Rebar Layer in Concrete Bridge Decks Using GPR Available to Purchase
Xiangmin Wei,
Xiangmin Wei
Georgia Institute of Technology, Atlanta, GA
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Zhenhua Xie,
Zhenhua Xie
Georgia Institute of Technology, Atlanta, GA
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Ying Zhang
Ying Zhang
Georgia Institute of Technology, Atlanta, GA
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Xiangmin Wei
Georgia Institute of Technology, Atlanta, GA
Zhenhua Xie
Georgia Institute of Technology, Atlanta, GA
Ying Zhang
Georgia Institute of Technology, Atlanta, GA
Paper No:
SMASIS2012-8154, pp. 861-867; 7 pages
Published Online:
July 24, 2013
Citation
Wei, X, Xie, Z, & Zhang, Y. "An Investigation on the Detectability of Deeper Rebar Layer in Concrete Bridge Decks Using GPR." Proceedings of the ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring. Stone Mountain, Georgia, USA. September 19–21, 2012. pp. 861-867. ASME. https://doi.org/10.1115/SMASIS2012-8154
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