冷铺沥青薄层罩面在陕西干线公路养护中的应用与性能验证OA

In order to meet the development needs of fine maintenance of trunk roads,and solve the problems of long con-struction period,large traffic interference,high energy consumption,heavy pollution and other problems of traditional maintenance technology,this paper discusses the engineering application of cold asphalt thin over-lay technology,analyzes the core characteristics of the technology combining the advantages of micro surfac-ing and hot mix ultra-thin mixture,and combined with the actual project,expounds the key points of mix pro-portion design and construction key technology control,and verifies its application effect through on-site per-formance testing.The results show that the cold paving asphalt thin layer overlay can effectively repair the slight ruts and cracks of the pavement,significantly improve the flatness,skid resistance and waterproof per-formance of the pavement,and prolong the service life of the pavement.At the same time,it has the advantag-es of fast construction,energy conservation and environmental protection,and significant economic benefits.