Abstract: According to the project actual conditions of the asphalt pavement on the high grade highway,the design method of the Marshell test mixing ratio for Stone Matrix Asphalt(SMA) is discussed,and the solving measures of some key volume index are presented,which have the instructive meanings of enhancing the operation performance and the operation life of the asphalt pavement.

Key words: asphalt pavement； Stone Matrix Asphalt； Marshell test； mixing ratio design； volume index；