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Rheological master curves for modified asphalt binders

Asgharzadeh, S. M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2013
  3. Abstract:
  4. Modified bitumen enhances the performance properties of asphalt mixtures. A number of studies in the last decade have evaluated the performance properties of modified binders at different service temperatures. It is however possible to evaluate some modified binder time-temperature characteristics and performance properties through their rheological master curves. In this research, styrene butadiene styrene, ethylene vinyl acetate, polyphosphoric acid and crumb rubber were used to modify a PG58-22 base binder. Rheological master curves for |G∗| and phase angles of these binders were generated using data from the dynamic shear rheometer and bending beam rheometer at temperatures ranging from -30°C to about 88°C. The rheological interpretation of the results indicated improved high and low temperature properties and reduced temperature susceptibility for most of the modified binders. A comparison of the modified binders was done based on the visual inspection of master curves for different temperature ranges
  5. Keywords:
  6. Complex modulus ; Modified binder ; Pavement performance ; Phase angle ; Rheological master curve ; Asphalt ; Asphalt mixtures ; Ethylene ; Rheometers ; Styrene ; Temperature ; Complex modulus ; Master curve ; Modified binders ; Phase angles ; Binders ; performance assessment ; Rheology ; Temperature effect
  7. Source: Scientia Iranica ; Volume 20, Issue 6 , 2013 , Pages 1654-1661 ; 10263098 (ISSN)
  8. URL: http://www.scientiairanica.com/en/ManuscriptDetail?mid=51