Investigation on Crumb Rubber (CR) and Low-Density Polyethylene (LDPE) Modified Asphalt Concrete Pavement Design, Performance, and Carbon Footprint
Funding Sponsor
American University in Cairo
Author's Department
Construction Engineering Department
Fifth Author's Department
Construction Engineering Department
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https://doi.org/10.1007/978-3-031-95111-4_10
Document Type
Research Article
Publication Title
Lecture Notes in Civil Engineering
Publication Date
1-1-2025
doi
10.1007/978-3-031-95111-4_10
Abstract
Due to the exponential growth of infrastructure, there is an increasing demand for asphalt-paved roads, which are posing environmental threats due to rising carbon emissions and non-biodegradable wastes. Non-biodegradable waste materials such as low-density polyethylene (LDPE) and crumb rubber (CR) have become more prevalent in landfills due to the increased dependence on plastic bags and the constantly rising demand for rubber tire-dependent vehicles. This research aims to study the integration of these waste materials into asphalt concrete, with a focus on reducing carbon emissions while reducing costs. Using CR and LDPE, a virgin asphalt binder with grade PG 64-22 was modified. Using the Superpave mix design method, hot mix asphalt (HMA) mixture alternatives for pavement treated base (TB) and pavement's wearing surface layers were designed using CR and LDPE-modified asphalt blends. Both modified asphalt mixes were characterized in reference to the control mix (with unmodified binder). Findings indicate that adding waste materials, like LDPE and crumb rubber, to asphalt pavement enhances its functionality. The LDPE-modified base and wearing surface (alternative 2) is found to be the best alternative in terms of carbon emissions, with reductions reaching 84 percent when compared to alternative 4 (control mix with no modifications). Although the initial costs of the three modified alternatives 1, 2, and 3 are all comparatively similar, waste-incorporated mixes with LDPE and crumb rubber have resulted in reduced life cycle costs by 54%.
First Page
141
Last Page
152
Recommended Citation
APA Citation
Atef, M.
Abdelhamid, E.
Ashmawy, M.
Shawki, M.
...
(2025). Investigation on Crumb Rubber (CR) and Low-Density Polyethylene (LDPE) Modified Asphalt Concrete Pavement Design, Performance, and Carbon Footprint. Lecture Notes in Civil Engineering, 710 LNCE, 141–152.
https://doi.org/10.1007/978-3-031-95111-4_10
MLA Citation
Atef, Mohamed, et al.
"Investigation on Crumb Rubber (CR) and Low-Density Polyethylene (LDPE) Modified Asphalt Concrete Pavement Design, Performance, and Carbon Footprint." Lecture Notes in Civil Engineering, vol. 710 LNCE, 2025, pp. 141–152.
https://doi.org/10.1007/978-3-031-95111-4_10