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Utilizing waste polyethylene for improved properties of asphalt binders and mixtures: A review
 
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1
Department of Civil Engineering, Ajloun National University, P.O. Box 43, Ajloun, 26810, Jordan
 
2
Faculty of Environmental Engineering, Lublin University of Technology, ul. Nadbystrzycka 40B, 20-618 Lublin, Poland
 
3
Department of Mechanical Engineering, Faculty of Engineering, Tafila Technical University, Tafila, Jordan
 
4
School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam, 40450, Malaysia
 
5
Authority of Natural Science Research and Technology, Tripoli, 00218, Libya
 
6
Department of Mechanical Engineering, Tuskegee University, Tuskegee, AL 36088, USA
 
 
Corresponding author
Ali Alahmer   

Department of Mechanical Engineering, Tuskegee University, Tuskegee, AL 36088, USA
 
 
Adv. Sci. Technol. Res. J. 2025; 19(1):301-320
 
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ABSTRACT
This review highlights the effects of adding to asphalt binder and asphalt mixtures, emphasizing its growing adoption globally due to environmental and economic advantages. The analysis evaluates the performance of asphalt binders and concrete mixtures modified with different forms of polyethylene (PE), including low-density polyethylene (LDPE) and high-density polyethylene (HDPE). The review revealed that incorporating waste polyethylene significantly enhances key properties of asphalt mixtures. Specifically, PE addition increases the softening point, viscosity, and specific gravity while reducing penetration. Furthermore, it improves the complex shear modulus, thermal stability, moisture resistance, and resistance to permanent deformation, although it may lead to a decrease in bulk density and creep rate of modified mixtures. The optimal PE content is recommended to be in the range of 4–12% by weight of binder, yielding substantial improvements in Marshall stability, flow, voids in mineral aggregates (VMA), air voids, dynamic modulus, and overall strength.
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