Design and Construction of Internal Drainage System of Pavement Structure
The design of drainage inside the structure is the key to solve this problem.In order to discuss the design and construction method of the internal drainage system of the asphalt pavement structure,and to observe the use effect,a test road with three sections of asphalt stabilized macadam drainage layer was designed and built.On the basis of summarizing the main points of materials,structure and construction technology,it is confirmed that it is feasible to replace part of the pavement structure layer with the asphalt stabilized gravel drainage layer to construct the internal drainage system of the pavement structure.The three drainage levels adopted can meet the needs of different pavement structure design.