随着国民经济的发展,道路交通量剧增,汽车轴载日益重型化,许多早期建设的水泥混凝土路面产生了多种破损现象:结构承载能力不足、行车舒适性差、车速难以提高。在近年来县际和农村公路改建和扩建中,为节约工程投资,有效地利用旧水泥混凝土路面,在其上加铺沥青混凝土,以改善其使用性能,但加铺的沥青混凝土常出现反射裂缝,进 With the development of the national economy, the traffic volume of the road has increased dramatically and the axle load of the vehicle has become more and more heavy. Many cement concrete pavements that were built in the early stage have many kinds of damage phenomenon: the structural carrying capacity is insufficient, the driving comfort is poor, and the speed of the vehicle is hard to be improved. In recent years, inter-county and rural road reconstruction and expansion, in order to save investment in engineering, the effective use of the old cement concrete pavement, asphalt pavement in order to improve its performance, but the bitumen is often reflected reflective cracking cracks Enter