What is GPR used to determine when scanning pavement?
GPR is able to measure pavement layer thickness and it can reveal other conditions which are not seen from the surface. When GPR is used on concrete it can reveal joint spacing, locations of reinforcements and the presence of full-depth asphalt patches. GPR for bridge decks is used to assess the location of delamination and freeze-thaw damage, computation for depth of reinforcement, evaluation of deterioration quantities, identification of amount and location of debonding of overlay, measurement of overlay thickness and quality control of reinforcing bar placement.
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