Evaluation of Canadian Long-Term Pavement Performance (C-LTPP) project

Highway agencies' limited budgets have resulted in the preservation of pavement infrastructures through the implementation of timely maintenance and rehabilitation. Overlaying with asphalt concrete is one of the most common methods for rehabilitating an old pavement. It is thus crucial for highway agencies to find the most efficient overlay design to extend the serviceability of pavements. The Canadian Long-Term Pavement Performance (C-LTPP) project was initiated under the supervision of the Canadian Strategic Highway Research Program (C-SHRP) in 1989, with the overall goal of evaluating and improving the overlaid pavements. The C-LTPP program monitors the performance of 65 in-service overlaid pavement sections in Canada.; This research is a network level analysis of available data from the C-LTPP program until year 2002. The main objectives of this study are to evaluate the performance of C-LTPP sections and to investigate the effect of different factors on overlay performance for Canadian traffic and climate conditions.