Glass transitions in bituminous binders

Abstract The RILEM TC 272 PIM (Phase and Interphase behavior of innovative bituminous Materials)—TG1 Binder has initiated an inter-laboratory program investigating the phase interphase behaviour binders. Within scope, four laboratories evaluated low temperature properties seven binders with differential scanning calorimetry (DSC). DSC been accepted as a powerful tool to evaluate, among others, glass transitions, T g , monitoring endothermic or exothermic heat flow material under controlled conditions. There are different ways run test, conventional linear-DSC (TL-DSC), modulation-DSC (TM-DSC). latter proven efficient method differentiating structural relaxation phenomena from capacity. In this study, emphasis was placed on comparing measured by TL- TM-DSC improve interpretation binder transitions. scope restrained two Polymer modified Binders (PmBs): commercially available named PmB1 highly (7.5 wt% high vinyl SBS) PmB2, were compared neat Based thermographs PmB2 obtained through program, it observed that modification 7.5% SBS resulted in decrease . This reduction reflects positive influence at temperatures.