Abstract
The use of reclaimed asphalt pavement (RAP) in freshly hot mixed asphalt (HMA) can save on material costs, preserve energy, and protect the environment. Employing limited amount of RAP in the production of asphalt mixes can result in similar performance as normal mixtures. However, adding more RAP can reduce the HMA’s mixing efficiency and could make the asphalt mixture more susceptible to fatigue and low-temperature cracking. Vegetable oil can act as a rejuvenator and reduce the HMA deficiencies with a high RAP percentage. This study investigated the potential effect of two vegetable oils; namely soybean oil (SOY) and sunflower oil (SnF), as rejuvenators on the properties of asphalt binders that contain 40% of RAP binder. To determine the optimum dosage of the rejuvenators (SOY and SnF), the properties of the rejuvenated RAP binders were carried out by conducting the penetration, softening point, viscosity, dynamic shear rheometer (DSR), and bending beam rheometer (BBR) tests. The test results indicated that vegetable oils could provide better fatigue and low-temperature cracking resistance with acceptable rutting performance. Furthermore, it is observed that, for the abovementioned properties, the addition of the 6%SOY and 3%SnF were more feasible in restoring the 40RAP binder to its original properties.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
