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随着国民经济的快速发展,公路交通流量在急剧增加的同时车辆轴载荷也在不断的提高,先前修筑的路面出现了不同程度的车辙、龟裂等路面病害,这就对高速公路的路面使用性能提出了越来越高的要求。SMA、OGFC等高性能路面结构适时被应用到高等级公路的建设中来,路面结构的变革,对公路建设的材料也提出了新的要求。改性沥青作为SMA、OGFC等路面的重要组成材料,以其优良的路用性能,在现代高等级公路的建设和养护过程中有着广泛的应用价值。
With the rapid development of the national economy, the road traffic flow is rapidly increasing while the axle load of the vehicle is also constantly increasing. The previously constructed pavement shows different degrees of road surface defects such as rutting and cracking, which makes the road surface of the expressway Performance has put forward higher and higher requirements. High-performance pavement structures such as SMA and OGFC have been applied to the construction of high-grade highways in time. The change of pavement structure has also put forward new requirements for the materials of highway construction. As an important constituent material of SMA, OGFC and other pavement, modified asphalt has extensive application value in the process of construction and maintenance of modern high-grade highways with its excellent road performance.