The compartmented alginate fibres optimisation for bitumen rejuvenator encapsulation

Amir Tabaković, Dirk Braak, Mark van Gerwen, Oguzhan Copuroglu, Wouter Post, Santiago J. Garcia, Erik Schlangen

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)
39 Downloads (Pure)

Abstract

This article presents development of a novel self-healing technology for asphalt pavements, where asphalt binder rejuvenator is encapsulated within the compartmented alginate fibres. The key objective of the study was to optimise the compartmented alginate fibre design, i.e., maximising amount of rejuvenator encapsulated within the fibre. The results demonstrate that optimum rejuvenator content in the alginate fibre is of 70:30 rejuvenator/alginate ratio. The fibres are of sufficient thermal and mechanical strength to survive harsh asphalt mixing and compaction processes. Furthermore, results illustrate that zeer open asfalt beton (ZOAB) asphalt mix containing 5% of 70:30 rejuvenator/alginate ratio compartmented alginate fibres has higher strength, stiffness and better healing properties in comparison to the control asphalt mix, i.e., mix without fibres, and mix containing fibres with lower rejuvenator content. These results show that compartmented alginate fibres encapsulating bitumen rejuvenator present a promising new approach for the development of self-healing asphalt pavement systems.

Original languageEnglish
Pages (from-to)347-359
Number of pages13
JournalJournal of Traffic and Transportation Engineering (English Edition)
Volume4
Issue number4
DOIs
Publication statusPublished - 2017

Keywords

  • Asphalt pavements
  • Calcium alginate
  • Compartmented fibres
  • Rejuvenation
  • Self-healing

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