Study On The Material And Mechanics Performance Of Asphalt Pavement Of Composite Base

In recent years, with the rapid development of our country highway traffic, the traffic volume is increasing constantly, the overload and fully-loaded vehicles are taking an increasing proportion in the whole traffic, the channel-oriented traffic is arising, and the early disruptive phenomenon is becoming more and more serious. But according to the research of both domestic and abroad, coarse bituminous mixture can raise the rut-resist ability of the pavement but not weaken other properties. Referring to the fruit of foreigners'study of the coarse bituminous mixture, this essay will not only study the mechanic features and road property of the material of the bituminous stabilized crushed stones base-course, but also will do the dynamic analysis of the pavement structure with bituminous stabilized crushed stones base-course.Firstly, analyzed the problem and causes of our country's highway that exists at present time, raised bituminous pavement with such a flexible base-course of bituminous stabilized crushed stones and describe the fruit of foreigners'study in this area.Secondly, analyzed the structural constitute properties and intense form mechanics of bituminous mixtures and bituminous stabilized crushed stones, through applying the design method of inlaying multi-grades, has proposed the gradation with skeleton inlay structure, and has studied the design method of mixture match ratio.Thirdly, through a great number of indoor tests, has done research on the properties of bituminous stabilized crushed stones mixtures such as the mechanic characteristic, the high temperature deform-resisted, and water stability and so on.Finally, on the basis of experimental study above mentioned, have analyzed the structural strength properties of the flexible base-course bituminous pavement by using the three-dimensional finite element. Compared the structural strength with semi-rigid bituminous pavement, go on the discussion to the structural design method of bituminous pavement of composite, which has its significance in such kind of pavement structural design in future.According to the research, we can get the result that bituminous stabilized crushed stones have excellent performance, and the structural strength of composite bituminous pavement is better than semi-rigid bituminous pavement.