Physical, rheological and chemical features of recycled asphalt embraced with a hybrid rejuvenating agent

Al-Saffar, Zaid Hazim and Haryati, Yaacob and Mohd Khairul Idham, Mohd Satar and Putra Jaya, Ramadhansyah and Che Ros, Ismael and Azman, Mohamed and Rogo, Kabiru Usman (2021) Physical, rheological and chemical features of recycled asphalt embraced with a hybrid rejuvenating agent. International Journal of Pavement Engineering. pp. 1-21. ISSN 1477-268X. (Published)

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Rejuvenating agents are considered desirable options in rejuvenating recycled asphalt’s properties. Hence, the capability of integrating waste engine oil (WEO) and maltene to rejuvenate the traits of recycled asphalt was investigated. The penetration, softening point, ductility and viscosity were measured to determine an ideal amount of hybrid rejuvenating agent. Then, the rejuvenated asphalt was evaluated against different samples through maltene to asphaltene ratio, rolling thin film oven (RTFO), storage stability, dynamic shear rheometer (DSR) and bend beam rheometer (BBR) tests. Later, the Fourier Transform Infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) and contact angle were employed. Based on the physical tests and the statistical analysis, the properties of recycled samples were restored approximately to that of the virgin asphalt by adding appropriate doses of hybrid rejuvenating agent. Meanwhile, the DSR and BBR results reported comparable performance between the rejuvenated and virgin samples. The hybrid rejuvenating agent has reduced the chemical ageing index and asphaltene content of the recycled asphalt. Moreover, TGA exhibited that the rejuvenated samples became more sensitive to temperature compared to recycled asphalt. In conclusion, 5% and 10% of the hybrid rejuvenating agent can renovate recycled asphalt for subsequent reuse in pavements depending on the characteristics of recycled asphalt. a,b, Haryati Yaacoba, Mohd Satara, Ramadhansyah Putra Jayac, a, Azman Mohameda and a

Item Type: Article
Uncontrolled Keywords: RAP; recycled asphalt; asphaltene; maltene; hybrid rejuvenating agen
Subjects: T Technology > TE Highway engineering. Roads and pavements
Faculty/Division: College of Engineering
Depositing User: PM Dr. Ramdhansyah Putra Jaya
Date Deposited: 05 Feb 2021 08:49
Last Modified: 05 Feb 2021 08:49
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