Defect Detection in Concrete Bridge Decks Using Radar

Abstract

<p>This paper summarizes the findings of a study on the use of Ground Penetrating Radar (GPR) for nondestructive evaluation of concrete bridge decks. GPR has been found to be a proven technique for condition assessment of bridge decks [1]. However, most GPR studies have involved testing in the field, where the conditions are complex [2]. The objective of the present study is to assess the effect of isolated anomalies on the radar waveforms and determine the capabilities and limitations of the GPR technique under controlled laboratory conditions. Also, a radar data analysis model previously developed by Halabe et al. [3] was further improved, and its accuracy of prediction was compared to the actual conditions existing in the laboratory specimens.</p>