A Review on the Durability of Recycled Asphalt Mixtures Embraced with Rejuvenators

Zaid Hazim Al-Saffar, Haryati Yaacob, Herda Yati Katman, Mohd Khairul Idham Mohd Satar, Munder Bilema, Ramadhansyah Putra Jaya, Ahmed Salama Eltwati and Hassanain Radhi Radeef
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Zaid Hazim Al-Saffar: Building and Construction Engineering Department, Technical College of Mosul, Northern Technical University, Mosul 41002, Iraq
Haryati Yaacob: Faculty of Engineering, School of Civil Engineering, University of Technology Malaysia, Johor Bahru 81310, Malaysia
Herda Yati Katman: Civil Engineering Department, College of Engineering, Tenaga National University, Kajang 43000, Malaysia
Mohd Khairul Idham Mohd Satar: Faculty of Engineering, School of Civil Engineering, University of Technology Malaysia, Johor Bahru 81310, Malaysia
Munder Bilema: Department of Highway and Traffic Engineering, Faculty of Civil Engineering and Environmental, University Tun Hussein Onn Malaysia, Batu Pahat 86400, Malaysia
Ramadhansyah Putra Jaya: Department of Civil Engineering, College of Engineering, Malaysia University, Gambang 26300, Malaysia
Ahmed Salama Eltwati: Department of Roads and Airports Engineering, Bright Star University, Brega, Libya
Hassanain Radhi Radeef: Faculty of Engineering, School of Civil Engineering, University of Technology Malaysia, Johor Bahru 81310, Malaysia

Sustainability, 2021, vol. 13, issue 16, 1-24

Abstract: Reclaimed asphalt pavement (RAP) has received much attention recently due to its increased use in hot mix asphalt (HMA) pavements to enhance pavement sustainability. The use of aged asphalt in RAP, which is highly oxidised and has lost its properties due to exposure to traffic loads and climatic conditions throughout its lifespan, can cause asphalt mixtures to stiffen and embrittle, thus negatively affecting the behaviour of asphalt mixtures. This issue may be resolved by including rejuvenating agents that can restore both physical and rheological properties of aged asphalt by increasing maltene fractions and decreasing asphaltene. However, the high restoration capacity of any kind of rejuvenating agent does not assure the durability of restored aged asphalt. This study explored the performance and durability of rejuvenated asphalt mixtures embedded with several types of rejuvenators identified from the extensive literature review. The study serves as a significant reference to predict future challenges in rejuvenating aged asphalt.

Keywords: asphalt; reclaimed asphalt pavement; rejuvenator; maltene; asphaltene; durability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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