Compared Rheology of Asphatlt Mastics Performance With Hydrated Lime and Limestone Filer

In this paper, the dynamic viscoelastic mechanics comparison between hydrated lime and limestone filler asphalt mastics is made by dynamic shear rheometer (DSR) , bending beam rheometer (BBR) and direct tension (DT) .The hydrated lime mastics rutting parameter is 1.6 times of limestone mastics when the ratio of filler bitumen (F/B) is 1.2, and the high temperature rheological is enhanced.The break energy of hydrated lime mastics is 2.2 times of limestone mastics when the F/B is 0.6, which improves low temperature cracking resistance.The cycles to failure of hydrated lime mastics is 1.4 times of limestone mastics.It is proposes that the synergistic effects of physical adsorption and chemical interactions enhance the high temperature rheology, low temperature flexibility, and fatigue failure of the hydrated lime asphalt mastics much more than that of limestone mastics.