Abstract

In this paper effects of different dosage of a typical vacuum residue (VR) on rheological properties of low viscosity bituminous binder are investigated. Detailed rheological studies were performed using Dynamic Shear Rheometer (DSR). Four approaches were used to investigate the temperature susceptibility of binders. Temperature susceptibility decreases with increase in VR percentage in VG10 showing high penetration index (PI), low viscosity-temperature susceptibility (VTS) and high penetration-viscosity number (PVN). Isochronal and isothermal graphs are plotted for different blends. From this study, it has been concluded that with the incorporation of VR in VG10, resistance to rutting in bituminous roads increases. VR modified bitumen shall perform better in high tempertaure climate.

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