Short-term and long-term aging effect of the rejuvenation on RAP binder and mixes for sustainable pavement construction

Short-term and long-term aging effect of the rejuvenation on RAP binder and mixes for sustainable pavement construction

Blog Article

This investigation analyzes the usefulness of Mahua oil (M-oil) in reclaimed asphalt pavement (RAP) binder which simulates the short-term and long-term aging behavior of asphalt.As the inclusion of a higher amount of the RAP in the bituminous mix is susceptible to fatigue and thermal cracking, the use of a rejuvenator is a suitable option that can reinstitute the properties of the virgin binder.Different percentages of M-oil such as 1%, Solar Covers 2%, 3%, 4%, 5%, and 6% added to the short-term and long-term aged binder.Blended rejuvenated binders were evaluated through various physical properties.It was noticed that the inclusion of a rejuvenator increases the penetration, ductility, and flash point and reduces the softening point, and viscosity.

Rheological properties conclude that rejuvenating short-term and long-term aged binder is feasible and can be considered an effective way to recycle the RAP binder.Further, rejuvenated (5% and 6% M-oil by weight of aged binder which is the optimum dosage) door-swings mixes were prepared with RAP mixture for short-term and long-term aging conditions to study the mechanical properties, i.e., moisture sensitivity and rutting.Finally, it was concluded that 5% M-oil successfully rejuvenated the RAP mixes in long-term aging conditions.