Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2002 · 17 citations · 0 references
EngineeringCivil EngineeringElectrical EngineeringAntennasBridge EngineeringStructural EngineeringConcrete ConstructionGround-penetrating RadarRadar AntennasRadar SystemsReinforced Concrete StructuresVoid DetectionBuried Object DetectionGround Penetrating Radar ImagingGround Penetration Radar MonitoringGround-penetrating Radar SensingGround-penetrating Radar SurveysNumerical ModellingPost-tensioned ConcretePre-tensioned Concrete
An investigation into the detection of voids in posttensioned concrete beams by ground penetrating radar is presented. Both experimental and numerical modelling results suggest that the optimum orientation of the radar's antennas is perpendicular to the long axis of the ducts containing the post-tensioning tendons.