Using ground penetration radar technology for pavement evaluations in Texas, USA

In recent years several investigators have attempted to use Ground Penetrating Radar (GPR) to detect subsurface problems in pavement systems. Much of the initial work focused on manual interpretation of multiple GPR traces collected along a highway. The traces were often color coded and an expert was needed to locate the problem areas. Sometimes the approach worked, other times poor results were obtained. Highway Departments who evaluated the technology recognized potential, but were often disappointed by the manual interpretation system.