OGDM-19 To Drainage Following Layer Asphalt Mixture Composition Design And Performance

The structure of asphalt pavement with the semi-rigid base have the flaws of crack in pavement and poor in water permeability of the semi-rigid. Setting basecourse of OGDM-19 asphalt mixture on the semi-rigid base can convey water and resist crack developing in some degree. It also can improve the serviceability of pavement, reduce the water damage and lengthen the life-span of pavement. It has important practical significance for the use of structure of asphalt pavement with semi-rigid base in the high grade way structure of our country.This task based on the Liu Bai test road of structure and construction technique with super-economical asphalt pavement, which research the Open Grade Drainage Asphalt Mixture. An excellent grade is recommended. The method of determine the suitable optimum bitumen content is advanced. In this task, the special properties (water disposal performance, crack resistance and mechanics performance) of Open Graded Drainage Asphalt Mixture are studied and the other road performance (high temperature stability, water stability and fatigue properity) of Open Grade Drainage Asphalt Mixture are tested. The drainage checking methods of laboratory and on-site of Open Grade Drainage Asphalt Mixture are advanced, which can provide reference for the design and structure of Open Grade Drainage Asphalt Mixture afterwards.