Technical, Economic, and Environmental Sustainability Assessment of Reclaimed Asphalt and Waste Polyethylene Terephthalate Pavements
Article
Article Title | Technical, Economic, and Environmental Sustainability Assessment of Reclaimed Asphalt and Waste Polyethylene Terephthalate Pavements |
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ERA Journal ID | 41498 |
Article Category | Article |
Authors | Sajid, Zeerak, Hussain, Arshad, Amin Khan, Muhammad Umer, Alqahtani, Fahad K. and Ullah, Fahim |
Editors | Zhang, Z., Zhang, H. and Ji, X. |
Journal Title | Sustainability |
Journal Citation | 16 (12) |
Article Number | 4911 |
Number of Pages | 31 |
Year | 2024 |
Publisher | MDPI AG |
Place of Publication | Switzerland |
ISSN | 2071-1050 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/su16124911 |
Web Address (URL) | https://www.mdpi.com/2071-1050/16/12/4911 |
Abstract | In the era of the global drive for sustainability in line with the United Nations Sustainable Development Goals (UN SDGs), sustainability measures are encouraged to be taken at all levels. This study explores a novel mix design integrating Reclaimed Asphalt (RAP) with waste Polyethylene Terephthalate (PET) to enhance pavement performance and sustainability. It adopts a holistic approach by investigating the technical, economic, and environmental aspects of the proposed mix to assess its sustainability. Industry experts emphasize the necessity of mitigating the resource intensiveness of pavement construction to foster sustainable infrastructure. RAP enables resource-efficient pavement construction by promoting asphalt recycling. However, increasing RAP quantity in the mix compromises asphalt structural stability, making it more susceptible to moisture damage and rutting. In this study, PET-modified Bitumen (PMB) is incorporated in higher RAP quantities in the asphaltic mix without compromising asphalt’s structural performance and durability. Various PMB amounts (2% to 10% by mass of mixture) were tested with 40% RAP (by mass of mixture), evaluating performance in terms of moisture damage, Marshall stability, rutting, etc. Optimal results were achieved with 6% PET and 40% RAP, showing a 7%, 57%, and 23% improvement in moisture resistance, rutting resistance, and Marshall stability, respectively, compared to unmodified asphalt (technical aspects). The novel asphalt mix demonstrated a 17% reduction in material cost (economic aspect) and a 53% decrease in CO2 emissions (environmental aspect) using Building Information Modeling (BIM). This study devises a prospective solution for the construction of resilient, resource-efficient, cost-effective, environmentally friendly, and sustainable pavements in line with UN SDGs and circular economy goals. |
Keywords | asphalt additives; circular economy; green pavements; polyethylene terephthalate (PET); reclaimed asphalt; sustainability assessment |
Article Publishing Charge (APC) Amount Paid | 3982.0 |
Article Publishing Charge (APC) Funding | Researcher |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400512. Transport engineering |
330314. Sustainable design | |
400504. Construction engineering | |
Byline Affiliations | National University of Sciences and Technology, Pakistan |
King Saud University, Saudi Arabia | |
School of Surveying and Built Environment |
https://research.usq.edu.au/item/z7xz7/technical-economic-and-environmental-sustainability-assessment-of-reclaimed-asphalt-and-waste-polyethylene-terephthalate-pavements
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