Encouraging sustainable use of RAP materials for pavement construction in Oman: A review

Dughaishi, Husam Al and Lawati, Jawad Al and Bilema, Munder and Babalghaith, Ali Mohammed and Mashaan, Nuha S. and Yusoff, Nur Izzi Md. and Milad, Abdalrhman (2022) Encouraging sustainable use of RAP materials for pavement construction in Oman: A review. Recycling, 7 (3). ISSN 2313-4321, DOI https://doi.org/10.3390/recycling7030035.

Full text not available from this repository.


The Sultanate of Oman has experienced rapid development over the last thirty years and has constructed environmentally friendly and sustainable infrastructure while it continues to find economical alternative resources to achieve the goals of the Oman 2040 vision. The primary concerns are preserving natural resources and reducing the impact of carbon dioxide (CO2 emissions on the environment. This review aims to encourage the sustainable use of reclaimed asphalt pavement (RAP) materials in pavement construction and focuses primarily on employing RAP materials in new pavement projects. Currently, new construction projects utilise a significant percentage of demolished asphalt pavement to save costs and natural resources. The key issue that arises when mixing RAP into new asphalt mixtures is the effects on the mixtures’ resistance to permanent disfigurements, such as fatigue cracks, that influence asphalt mixture performance. Numerous studies have assessed the impact of using RAP in asphalt mixtures and found that RAP increases the stiffness of asphalt mixtures, and thus improves rutting resistance at high temperatures. Nevertheless, the findings for thermal and fatigue cracking were found to be contradictory. This review will address the primary concerns regarding the use of RAP in asphalt pavements, and aims to encourage highway agencies and academic researchers in the Gulf countries to develop frameworks for the practical usage of RAP in the construction of sustainable pavement systems. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Article
Funders: University of Nizwa paid for the Article Processing Charges (APC)
Uncontrolled Keywords: Asphalt recycling; Reclaimed asphalt pavement (RAP); Sustainable development; Rejuvenators; Flexible pavement
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Oct 2023 06:31
Last Modified: 24 Oct 2023 06:31
URI: http://eprints.um.edu.my/id/eprint/43608

Actions (login required)

View Item View Item