Design method of mother-asphalt-mixture with semi-flexible pavement based on the volume method

The semi flexible pavement is a kind of new asphalt pavement,it's material structure is the framework closed texture,however,the mother asphalt mixture is framework void texture.To make the mother asphalt mixture have good volume character,based on the foreign study and the nature condition of China,the design method of mother asphalt mixtrue based on the volume design method is presented,and the validity of the design method has been validated by means of the test.