Thermal analysis on the component interaction of asphalt binders modified with crumb rubber and warm mix additives

Huayang Yu, Zhen Leng, Zheming Gao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)

Abstract

The modified binders were divided into two parts for analysis purpose, namely the extracted crumb rubber modifier (CRM) by removing all asphalt components and the separated binder system by removing insoluble CRM particles. The main findings of this study include that: (1) the interaction between CRM and base asphalt was a component exchange process, i.e., natural rubber and styrene-butadiene rubber were released from CRM and blended with asphalt molecules; (2) wax-based warm mix additives penetrated into CRM during the mixing process; (3) the incorporation of warm mix additives especially the wax-based additives, promoted the component exchange between rubber and asphalt.
Original languageEnglish
Pages (from-to)168-174
Number of pages7
JournalConstruction and Building Materials
Volume125
DOIs
Publication statusPublished - 30 Oct 2016

Keywords

  • Asphalt rubber
  • Interaction mechanism
  • Thermal analysis
  • Warm mix additive

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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