f Ground penetrating radar for roads and bridges: strengths and limitations

Ground Penetrating Radar (GPR) has been used increasingly on roads and bridges over the last five years. GPR offers non-destructive evaluation of the subsurface along continuous profiles, providing unique information on the structural layers and material properties of roadways . Given that roads have a relatively simple geometry and are usually composed of homogeneous, engineered materials, this application would appear ideally suited to SPR . However, there are several pitfalls associated with this application . Some of these pitfalls are generated by equipment limitations, such as pulse length, sampling rates and fitter . Others are introduced when standard assumptions, commonly applied to GPR data from geotechnical environments, are used . In addition, the particular Weeds of the end client must be considered .