Reseach On Asphalt Pavement Structur And Material Performance Of Xingfen Expressway

With the increasing development of the economy,traffic is more developed,and domestic and foreign highways are also more and more important,and the structural combination of high-speed asphalt pavement is also more and more important.In the process of highway asphalt pavement structure design,the combined ratio of AC-20 and SMA-13 asphalt mixture was designed by the Marshall test.Secondly,the structure combination design,by finishing the good asphalt pavement structure combination at home and abroad,according to the normative principles and the material index limit,recommended several groups of good asphalt pavement structure combination.The most widely used semi-rigid base road surface in China was selected for design.Finally,according to the recommended structure combination,mechanical analysis was carried out,modulus and thickness were selected as variables,bending and bottom tensile stress were used as response variables,KENPAVE software was used to calculate each group of data,and Minitab software was used to perform multiple regression to find out the function relationship.According to the function relation,the structure combination under different soil modulus of different axis load is recommended..