Calibration and validation of a flexible pavement roughness prediction model

The main objective of this study is to calibrate the roughness model in term of the international roughness index (IRI), developed by a new approach. In order to achieve this objective, the methodology used was based on data from the long term pavement performance (LTPP) program and MTQ databases, and from gathering geotechnical parameters resulting from characterization testing of samples taken at every 5malong five different sites in Quebec. The required calibration coefficients were successfully determined. The second purpose of the study is model validation. For lack of geotechnical parameters at every 5 m along the sections identified to achieve this objective, a system of level of of use of the roughness model was developed. Three levels of use of the model were developed and the model was validated in the third level of use with an acceptable success. © 2017, Canadian Science Publishing. All rights reserved.