There are some differences in mix design method between ATB and Asphalt Concrete (AC), because their vertical positions and functions in pavement structure are different.

• 由于沥青稳定碎石材料所处的层位不同、结构功能的差异，沥青稳定碎石基层材料组成设计方法与沥青混凝土面层有所不同。