摘要
随着交通事业的迅速发展和公路等级的提高,桥梁在高速公路中所占比重日益增大。沥青混凝土桥面铺装层由于经受车辆重复荷载的振动、冲击、拉伸、剪切、动水压力等力学作用的影响,以及由温度、气候变化引起膨胀、收缩后,往往会产生细微裂缝.
pavement surface penetrate rejuvenate restore(SPRR) technology is a preventive maintenance technology which sprays asphalt pavement maintenance agent on road surface or bridge deck by special sprayer when the structure of road or bridge is in good condition.Through a series of chemical and physical reactions between maintenance agent and old asphalt pavement,the old asphalt pavement could be regenerated.In this paper,the right treatment timing of SPRR technology and the penetration mechanism of maintenance agent were discussed.The regeneration ability of maintenance agent for old asphalt was studied by experiments.The results show that the regeneration effect is good.Combined with Xiliu River Bridge,the SPRR lechnology was used to maintain the bridge deck. Practice shows that the cracks can be fixed effectively, and water-seepage can be prevented.
出处
《筑路机械与施工机械化》
北大核心
2011年第9期21-29,45,共9页
Road Machinery & Construction Mechanization