A review of rubberised asphalt for flexible pavement applications: Production, content, performance, motivations and future directions

Bilema, Munder and Yuen, Choon Wah and Alharthai, Mohammad and Al-Saffar, Zaid Hazim and Al-Sabaeei, Abdulnaser and Yusoff, Nur Izzi Md (2023) A review of rubberised asphalt for flexible pavement applications: Production, content, performance, motivations and future directions. Sustainability, 15 (19). ISSN 2071-1050, DOI https://doi.org/10.3390/su151914481.

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Abstract

The crumb rubber (CR) recycled from waste tyres could be a viable alternative in achieving green pavements that offer exciting new markets to global investors. Adding CR into flexible pavements enhances their performance and ensures environmental sustainability. This paper will discuss the production variables, CR sizes and contents, blending techniques, optimum bitumen contents, morphology, standard characteristics, rheological characteristics, mechanical performance, greenhouse gas emissions, energy consumption and life cycle cost. This review study found that compared to traditional asphalt mixtures, the CR-modified asphalts had superior performance and longer service life. However, the dearth of information on several factors in CR asphalt production, including greenhouse gas emissions, energy consumption and life cycle cost during recycling, causes many agencies in the global asphalt industry to continue employing costly, energy-consuming additives such as styrene-butadiene-styrene (SBS) instead of CR to enhance asphalt.

Item Type: Article
Funders: Najran University, Ministry of Education – Kingdom of Saudi Arabi [Grant no. NU/IFC/2/SERC/-/10]
Uncontrolled Keywords: Crumb rubber (CR); Characteristics; Mechanical performance; Greenhouse gas emissions; Energy consumption; Life cycle cost
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Oct 2025 09:05
Last Modified: 24 Oct 2025 09:05
URI: http://eprints.um.edu.my/id/eprint/48122

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