Determining the depth of hydro demolition using Lidar methods.

PDFTech ReportNUTC R334Project #00042275DTRT06-G-0014Ground penetrating radarLaser radarHighway bridgesBridge decksDensityConcreteThicknessCondition surveysMissouriMissouri University of Science and Technology. Center for Transportation Infrastructure and SafetyMaerz, NorbertBoyko, KenMissouri University of Science and Technology. Center for Transportation Infrastructure and SafetyUnited States. Dept. of Transportation. Research and Innovative Technology AdministrationUS Transportation CollectionMissouri S&T was contracted to conduct research on the effectiveness of using ground-penetrating radar (GPR) to assess severalhighway bridges in rural Missouri. The assessment was to be based on the principle that sound concrete has a different density thanunsound concrete, and this property could be used to map areas of bridge decks requiring repair.While the GPR assessment involved adozen bridges, three bridges were selected to provide ground-truth data to calibrate the GPR-based assessment process