Research On Design & Application Technique Of The Asphalt-treated Permeable Base

To solve the serious problems of water damage in asphalt pavement in high-temperature and rainy weather in south china, the thesis study the Asphalt-treated Permeable Base.First, the design method and theory of Asphalt mixes of Asphalt-treated Permeable Base are studied. In theory, the requirements of the larger void, it is asphalt mixture skeleton structure of the gap structure. Its composition has the following characteristics: their proportion of coarse aggregate more closely connecting each other, fine aggregate relatively small quantity or not, cannot fill the gap between the large particles, stone skeleton fully formed, more Voidage, permeability coefficient higher; Mixture relying mainly on the strength of the coarse aggregate in the friction .Secondly, the design Asphalt mixes of Asphalt-treated Permeable Base are specifically divided into five stages: 1. Determining asphalt stabilized gravel drainage layer mixture of technical requirements; 2. Raw materials testing; 3. Relationship based on experience, grade and primaries determine asphalt content; 4. Primaries grade for permeability coefficient, compressive back elastic modulus of leakage test and analysis of the screening; 5. Determining design grade, and performance of Asphalt mixes of Asphalt Treated Base.In accordance with Permeable ability and strength requirements, designing on four grading styles of asphalt mixes, and a great deal of penetration coefficient tests, compressive modulus of resilience and analysis of the leakage tests are done, Identify the Optimized asphalt aggregate ratio. So void of asphalt mixes is at the range of 17～23%, 20% is the value of these objectives void.Finally, to study the application technology of Asphalt Treated Permeable Base, the Asphalt Treated Base test road is paved. According to the trial results showed that the detection Road, ATPB mixture has good road performance.