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2 Advances in Science and Technology. Research Journal

2 2025

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Waste polyethylene effect on asphalt binder and mixture properties: State of the art

Khedaywi Taisir, Haddad Madhar, Al-Migdady Abeer

Advances in Science and Technology. Research Journal

2025

Vol. 19, no. 7

234--251

A detailed review evaluating performance of asphalt binder and mixture after adding waste polyethylene (WPE) is presented in this paper. Searching for the most suitable ratio of WPE to be added and looking for which properties of asphalt binder and mixture are affected by WPE addition are addressed. There is an assent among many researchers that adding WPE to asphalt mixture has resulted in better properties shown by increasing softening point, viscosity and specific gravity, decreasing penetration, enhancing complex shear modulus values and decreasing phase angle values in addition to improving thermal stability, permanent deformation resistance, moisture resistance and creep modulus, while modified mixture bulk density and creep rate have decreased. The most suitable ratio of WPE is recommended between 4% and 12% by binder weight. Using WPE in its different forms has recently become very common in different regions worldwide because it helps in saving environment and country’s economy.

Utilizing waste polyethylene for improved properties of asphalt binders and mixtures: A review

Assolie Amani Abdallah, Al-Migdady Abeer, Borowski Gabriel, Alsaqoor Sameh, Ali Ahmed Suliman B., Alahmer Ali

Advances in Science and Technology. Research Journal

2025

Vol. 19, no. 1

301--320

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.