What is it about?
The bond between aggregate and asphalt binder depends on many factors, such as the chemistry of materials, nature of aggregates, and quality of asphalt binder. The present study evaluates the effects of recycled asphalt pavement (RAP) on the bonding behavior of asphalt binder for acidic (granite and quartzite) and basic (basalt and limestone) aggregates. AC30 binder was blended with different proportions of RAP binder (15%, 25%, and 40%). The interfacial energy and bond strength of 16 combinations (four asphalt binders× four aggregates) of aggregate-asphalt binder system were evaluated based on a surface free energy (SFE) approach and binder bond strength (BBS) test, respectively.
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Why is it important?
One of the strong motivations of this study was to evaluate how interfacial energy parameters calculated based on the SFE of an aggregate-asphalt binder system may correlate with the outcome obtained from a BBS test.
Perspectives
Conducting research for this article was a great pleasure and experienced the greater level of satisfaction.
Ayyanna Habal
Indian Institute of Technology Bombay
Read the Original
This page is a summary of: Influence of Recycled Asphalt Pavement on Interfacial Energy and Bond Strength of Asphalt Binder for Different Types of Aggregates, Transportation Research Record Journal of the Transportation Research Board, July 2018, SAGE Publications,
DOI: 10.1177/0361198118784377.
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