[Abstract] The multiple stress creep recovery (MSCR) test has been proposed as a replacement for the existing high temperature binder test (G*/sin δ). However, most studies concerning with MSCR test focus on polymer modified asphalt. In this study, both polymer modified asphalt and non-polyer modified asphalt were characterized using MSCR test and dynamic oscillatory test. Linear SBS modified asphalt binders were selected as polymer modification group. Gilsonite and polyphosphoric acid (PPA) modified asphalt were selected as non-polymer modification group. Hamburg Wheel Tracking Test (HWTT) was used to validate the reliability of G*/sin δ and MSCR in terms of rutting resistance ranking on selected binders in this limited study. The test results indicated that phase angle and MSCR percent recovery could distinguish the polymermodified binders from non-polymer modified binders. There was linear relationship between phase angle and MSCR percent recovery, but such relationship was dependent on modifier type. However, there was divergence in ranking rutting resistance of non-polymer and polymer modified binders according to G*/sin δ and Jnr3.2 in this limited study. Hamburg Wheel Tracking Test proved that the rutting resistance ranking based on Jnr3.2 was more reliable for the selected non-polymer and polymer modified binders. For highly modified binders with linear SBS and Gilsonite, G*/sin δ overestimated the rutting resistance of Gilsonite modified asphalt if compared to linear SBS modified asphalt.
