| 1. | These years with fast develpment of highly classified road , because of more and more heavy traffic and superimposed load of the bigger truck , there ' re a lot of bleeding , ruts , deformation and so on on the pavement . before according to the traditional mix design method of asphalt concrete , the pavement has n ' t suit to the modern traffic development
近几年我国的高等级公路飞速发展，由于交通量和汽车的载重越来越大，沥青混凝土路面出现了泛油、车辙、拥包变形等病害，以往人们凭经验方法设计的道路已经不能完全适应现代化交通发展的客观形势。 |
