Evaluation about the Old Asphalt Pavement Performance of Chang-Tai Freeway

In recent years, with the development of freeway in China, requirement of road users is increasing and construction mechanization degree is enhanced, asphalt pavement structure has been generally used for freeway, but how to design the asphalt pavement construction is the key problem that to ensure pavement performance. Asphalt pavement has appeared more or less premature failure in each province freeways. This paper tests and evaluates the existing asphalt pavement performance based on Chang-Tai freeway maintenance projects, and the results can provide some technological supports for engineering maintenance programs.