ABSTRACT
ABSTRACT: This study presents a probabilistic methodology for assessing the condition of bridge decks using ground penetrating radar (GPR). GPR is a subsurface sensing and imaging (SSI) technique that provides quantitative information about features inside deck materials. Although GPR is already used by many transportation agencies, the need still exists for a definitive determination of its accuracy. This is being achieved in this study through consideration of important uncertainties and probabilistic modeling of two measures: rebar reflection amplitude and wave traveling time. The developed methodology is illustrated in a case study that uses real-world data and designed to establish conformity of GPR measures to the “ground truth”. Important findings and conclusions are presented and discussed. This study is part of a major research project that aims to advance new subsurface sensing and imaging techniques for determining the internal condition of civil infrastructure and geo-media.
