Grey Correlation Analysis of Bio-Oil Rejuenated Asphalt Performance and Components

The objective of this paper is to study the relationship between four components and rejuvenated asphalt properties. Long-term aged asphalt was restored with varied dosages of bio-rejuvenator. Rejuvenated asphalt samples were separated into four fractions (aromatics, asphaltenes, resins, and saturates) based on component analysis. Binder properties, consisting of viscosity, performance grade, and fatigue resistance were measured. The chemical composition influence of each fraction on binder properties was analyzed qualitatively by grey correlation analysis. The results showed aromatics were important in affecting low temperature performance. Asphaltenes had a significant effect on viscosity and saturates greatly affected high temperature performance. It was found that asphaltenes exerted a negative influence on fatigue resistance. The results demonstrated the performance variations of binders during aging and rejuvenating process agreed well with the correlation relationship between performance properties and composition fractions. Grey correlation analysis was validated to indicate the performance variation in aged asphalts’ rehabilitation process.

Language

  • English

Media Info

  • Media Type: Web
  • Features: Figures; References;
  • Pagination: pp 999-1010
  • Monograph Title: CICTP 2019: Transportation in China—Connecting the World

Subject/Index Terms

Filing Info

  • Accession Number: 01722090
  • Record Type: Publication
  • ISBN: 9780784482292
  • Files: TRIS, ASCE
  • Created Date: Jul 2 2019 3:04PM