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Barriers and Enablers of the Adoption of Recycled Materials Usage in Asphalt Pavement for the USA and Australia: A Systematic Review

conference contribution
posted on 2023-02-01, 01:41 authored by Timothy Cassidy, Nateque MahmoodNateque Mahmood, Argaw GurmuArgaw Gurmu
There is a global push for developing more sustainable infrastructure, including the use of recycled materials in asphalt pavements. It is apparent that using recycled materials offers environmental and economic benefits as it diverts waste materials away from landfills whilst also reducing the need for new virgin aggregates and binders. The initial research identified previous reviews that had focussed on a single material did not investigate barriers or lacked a structured framework. As such, this study sought to address these gaps, with a focus on Australia and the United States. This study conducted a systematic literature review to identify barriers and enablers to the use of recycled materials in asphalt pavements. The initial literature search yielded 425 results. Then, after a screening of article titles and abstracts for relevance, 294 articles were deemed eligible for inclusion in the study. The study found the most prominent recycled material in the existing literature was Reclaimed Asphalt Pavement in both USA and Australia. The barriers identified in the literature were lack of reliable information on performance, lack of mix-design information, inadequate test methods, production issues, impaired rerecyclability, and detrimental effects on workers’ health and safety. This study also identified that the known enablers are not yet fully understood and require further research to better overcome barriers. It is expected that regulatory government agencies, civil construction contractors, and asphalt companies will benefit from this research.

History

Location

Western Sydney University, Sydney, New South Wales, Australia

Start date

2022-11-23

End date

2022-11-25

Language

English

Editor/Contributor(s)

Hardie M

Title of proceedings

GLOBAL CHALLENGES IN A DISRUPTED WORLD: Smart, Sustainable and Resilient Approaches in the Built Environment

Event

AUBEA 2022 - The 45th Australasian Universities Building Education Association Conference

Publisher

Western Sydney University

Place of publication

Western Sydney

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