Abstract：The volume indexes of VMA and VV were chosen to characterize the voidage of asphalt mixtures, and the VCAratio was used to characterize the compactness of skeleton structure with the indexes of high temperature performance, low temperature performance and water stability to establish the relationship between spatial distribution and road performance. The results show that VMA and VCAratio can well distinguish the spatial distribution of mixtures. The low temperature performance and the water stability of asphalt mixtures are greatly affected by VMA, while the high temperature stability is less sensitive to VMA. The VCAratio has great effect on the high temperature stability with less effect on the low temperature performance and the water stability. When the value of VMA is increased much, the low temperature performance and the water stability of asphalt mixtures are decreased sharply. With the decreasing of VCAratio, the high temperature performance is increased gradually. At the critical point of VCAratio equal to 1, the high temperature performance changes dramatically.
2018, Vol. 39 
