Abstract
Adhesion between asphalt binders and aggregates is important to the performance of asphalt mixtures. Polymeric modifiers are added to improve the performance of different binders. Thus, it is essential to characterize quantitatively the adhesion between modified binders and aggregates. In this study, a scanning force microscope with particle probes was used to measure the adhesion between the control binder PG 64-22 and three modifications using styrene–butadiene rubber, polyphosphoric acid, and styrene–butadiene–styrene. Unit surface energies were used to distinguish the adhesion between modified binders. Results showed that the adhesion between alumina particles and binders increased as weight percentages of the modifier increased. However, no monotonic trends were observed for the adhesion between silica or calcium carbonate particles and binders. The surface morphologies of the modified binders were different from those of the control binder as a result of modifications.
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 callMore From: Transportation Research Record: Journal of the Transportation Research Board
Disclaimer: 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.
