The role of thermodynamics and kinetics in rubber–bitumen systems: a theoretical overview

Haopeng Wang*, Panos Apostolidis, Jiqing Zhu, Xueyan Liu, Athanasios Skarpas, Sandra Erkens

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)
174 Downloads (Pure)

Abstract

Waste tire rubber has been incorporated into asphalt modification for decades due to its various benefits. There are two main mechanisms during bitumen–rubber interaction: rubber swelling and chemical degradation. This study surveys these two processes from the viewpoint of polymer science. The kinetics of rubber dissolution and thermodynamics of rubber swelling are discussed to provide a fundamental understanding of the interaction process and to demonstrate how optimisation of material selection and processing procedures can lead to the desired binder properties. Factors including the interaction conditions and raw material characteristics are analysed based on the previous theories and compared with experimental results.

Original languageEnglish
Pages (from-to)1785-1800
Number of pages16
JournalInternational Journal of Pavement Engineering
Volume22 (2021)
Issue number14
DOIs
Publication statusPublished - 2020

Keywords

  • chemical degradation
  • Crumb rubber modified bitumen
  • diffusion
  • solubility
  • swelling
  • thermodynamics

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