Using NDT Data to Assess the Effect of Pavement Thickness Variability on Ride Quality

Pavement condition largely determines its long-term behavior and is of paramount importance for rehabilitation maintenance management. The use non-destructive testing (NDT) systems to assess pavement has gained much popularity. Often, well-known NDT are combined take full advantage the capabilities each system. Combining independent optimize assessment process a scientific challenge. With this in mind, purpose paper investigate extent which data from two can be combined: thickness obtained with ground penetrating radar (GPR) roughness road surface profiler (RSP). In particular, objective study determine whether expected variations asphalt layer thickness, due construction different cross sections along same road/highway road, may have an impact on as expressed International Roughness Index (IRI) values. GPR collected, processed, analyzed. analysis results show that reflected roughness. greater variation IRI Furthermore, it argued used initial quality.