Current NDT Procedures for Pavement Structural Evaluation

This paper provides an overview of typical non-destructive test (NDT) procedures currently used for pavement structural evaluation applications. In particular, surface deflection measurements, spectral analysis of surface waves (SASW), and ground penetrating radar (GPR) approaches are described and discussed. Data interpretation and application, including problems encountered with each type of measurement, are also covered. Potential future developments in this field are discussed.