Fig. 4From: Evaluation of the Depth of Deteriorations in Concrete Bridge Decks with Asphalt Overlays Using Air-Coupled GPR: A Case Study from a Pilot Bridge on Korean ExpresswaySurface condition map obtained from the pilot bridge deck, which includes various types of surface damages ( : core, : surface-breaking cracks, : efflorescence, : patching and : pothole).Back to article page