Influence of hindered phenol additives on the rheology of aged polymer-modified bitumen

► The stiffening index suggested that SBR and HP2 are the most effective additives. ► HP2 decreases bitumen stiffening while polymers increase bitumen stiffening. ► Thermal stability analysis suggested that HP2 limited bitumen stiffening increase. ► HP2 with SBR combined reduced moisture damage and increased rutting resistance.