Journal article
Characterization of effects of reclaimed asphalt pavement (RAP) source and content on dynamic modulus of hot mix asphalt concrete
Construction and Building Materials, Vol.217, pp.487-497
2019
Abstract
The effects of the reclaimed asphalt pavement (RAP) source and content on the dynamic modulus (E*) of hot mix asphalt concrete were characterized. Two parameters were proposed: the non-dimensional dynamic modulus-temperature index () and non-dimensional dynamic modulus-frequency index (). Parameter indicates the increase of relative E* per unit percent RAP from different sources during frequency and temperature sweeps, while characterizes the reduction of relative E* per 1°C temperature increase. An analysis of the results showed that of RAP mixes were 6.80% to 12% higher than those of the control samples, indicating less temperature susceptibility. Furthermore, an analysis of trends showed temperature independency at higher temperature ranges. In addition, the results showed that the activation energy (AE) of the mixes was 1.51 MJ/mol/K to 9.86 MJ/mol/K higher than that of the control samples (without RAP), which depends on the RAP content and source. Moreover, E* linearly increases as AE increases. In conclusion, the increase of intermolecular forces owing to the higher AE in the blended binders increased the mix stiffness, which resulted in a higher E* in mixes containing RAP.
Details
- Title
- Characterization of effects of reclaimed asphalt pavement (RAP) source and content on dynamic modulus of hot mix asphalt concrete
- Authors
- Ali Jamshidi (Author) - University of the Sunshine Coast - School of Science & EngineeringGregory W White (Author) - University of the Sunshine Coast - School of Science & EngineeringMehdi Hosseinpour (Author) - Aalborg University, DenmarkKiyofumi Kurumisawa (Author) - Hokkaido University, JapanMeor Othman Hamzah (Author) - University Sains Malaysia, Malaysia
- Publication details
- Construction and Building Materials, Vol.217, pp.487-497
- Publisher
- Elsevier BV
- Date published
- 2019
- DOI
- 10.1016/j.conbuildmat.2019.05.059
- ISSN
- 0950-0618; 0950-0618
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99451428102621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Materials Science, Multidisciplinary