RILEM TC 279 WMR round robin study on waste polyethylene modified bituminous binders: advantages and challenges

Marjan Tušar*, Muhammad Rafiq Kakar, Lily D. Poulikakos, Emiliano Pasquini, Andrea Baliello, Marco Pasetto, Laurent Porot, Di Wang, Davide Lo Presti, Aikaterini Varveri

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
9 Downloads (Pure)


Inter-laboratory experiments were designed to evaluate the impact of plastic waste blended directly in bitumen and to assess the properties, using conventional and advanced bituminous binder testing. The blends targeted 5% of plastic waste in 95% bitumen, using two types of polyethylene (PE) primary (pellets) and secondary (shreds) waste. The experiments showed that the addition of PE waste to bitumen does not alter the chemistry of the bitumen, the blending is physical. The DSR results indicate a strong dependency on the testing temperature as at low temperatures the composite material bitumen and PE behave both elastically whereas, at higher temperatures, the bitumen becomes viscoelastic. The MSCR tests indicated that the neat binder is more sensitive to permanent deformation compared to the blends with PE. The fatigue performance using the Linear Amplitude Sweep test showed a better performance in terms of stress and fatigue life for the PE blends.

Original languageEnglish
Pages (from-to)311-339
Number of pages29
JournalRoad Materials and Pavement Design
Issue number2
Publication statusPublished - 2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • Asphalt
  • performance
  • plastics
  • polyethylene
  • waste


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