The target mix ratio design of expressway should direct correctly the construction,solve the problems accruing in design,such as the contradiction between the voidage and stability of asphalt mixture.

• 高速公路设计阶段的目标配合比设计要能够指导施工,同时能够正确解决在目标配合比设计中时有出现的沥青混合料空隙率与稳定度之间的矛盾等值得注意的问题。