Reviews literature pertaining to physical and chemical characteristics of aggregates that have a significant effect on the bonding between aggregate and the asphalt. Research focused on the role played by morphology, electrical properties, and the mineral composition of the aggregate in its interaction with water. The report also examines the chemical functionalities in both asphalt and aggregates that play a predominant role in bonding, as well as the effect of surface modification of the aggregate and the use of antistripping agents.