Use of ground penetrating radar data in pavement rehabilitation strategy selection and pavement condition assessment

Abstract
The Fort Worth District of the Texas Department of Transportation (TxDOT) has used Ground Penetrating Radar (GPR) data extensively for pavement condition assessment and pavement rehabilitation type selection. GPR is a non- destructive testing technique that can determine pavement layer thicknesses as well as the presence of excessive moisture or excessive air voids in pavement layers. This paper describes four case studies where TxDOT personnel used GPR data to make pavement rehabilitation and assessment decisions.