Study On Durability Of Drainage Asphalt Pavement

Drainage Asphalt Pavement is a new pavement of large void structure. In the pavement, Drainage Asphalt Pavement mixture is laid on the topside of the pavement, and dense graded concrete is laid down it to protect water from infiltrating. The water enters in the drainage layer, then discharges the pavement structure. This kind of pavement structure can promptly discharge the water, thus enhance the vehicles travel safety performance in the rainy day. At the same time, because of large void structure in the mixes, it reduces the traffic noise effectively. Because of fine functions of draining water, skid prevention, noise reduction, Drainage Asphalt Pavement obtains widespread attention and application, and has made the good use progress.Although Drainage Asphalt Pavement has fine performance of draining water, skid prevention, noise reduction, the structure intensity is lower for large void structure, and the Drainage Asphalt Pavement mixture is easy to be affected by environmental factors, the highway surfaces durability and function endurance comes under the influence. The article discussed the primary factors that influence Drainage Asphalt Pavement durability, and do some laboratory experiments on high temperature stability, low temperature crack resistance, anti-water harm, weary as well as aged performance of Drainage Asphalt Pavement mixture. At last, the measure of improving Drainage Asphalt pavement durability are proposed.The article takes Xian Xian yang international airport special-purpose expressway as the entity project, and through this entity project, the performance of Drainage Asphalt pavement has been confirmed. The pavement design method and the construction craft are proposed by doing laboratory test as well as the actual pavement behavior. It may supply to refer to the use from now on.