Structure-Property Relationships to Understand Comprehensive Rejuvenation Mechanisms of Aged Asphalt Binder by Amirul Islam Rajib A Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy Approved July 2020 by the Graduate Supervisory Committee: Elham Fini, Chair Huiming Yin Kamil Kaloush Mahour Parast Michael Mamlouk Mounir El Asmar ARIZONA STATE UNIVERSITY August 2020