摘要：AbstractWarm mix asphalt (WMA) has been popularly used in all over the world to reduce both energy consumptions and carbon emissions in asphalt paving industry. The long-term aging characterization of binders containing WMA additive was evaluated in this research. The penetration grade 60/80 and SBS modified binders were selected as virgin materials. The Sasobit, WMA additive, was blended into virgin materials with 2%, 3%, 4% and 5% by weight of binders. The warm modified binders were aged by means of the rolling thin film oven (RTFO) and pressure aging vessel (PAV). A serial of laboratory studies, such as Penetration, four-constituents, rotational viscometer (RV), dynamic shear rheometer (DSR) and bending beam rheometer (BBR), were conducted on both virgin binders and long-term aging binders. The aged rates of binders were calculated and compared. The results showed that the virgin binders played an important role in the determination of warm modified binder's properties and colloid-structures. However, compared to the aging regulation of virgin and warm modified binders, Sasobit had no or marginally positive influence on the long-term aging characterization (affected by virgin binder type) of warm modified binders.
