The effect of long-term oxidation on the rheological properties of polymer modified asphalts Academic Article uri icon

abstract

  • The effect of long-term aging on rheological properties of polymer modified asphalt binders was studied. Modifiers included diblock poly(styrene-b-butadiene) rubber, triblock poly(styrene-b-butadiene-b-styrene), and tire rubber. Asphalt aging was carried out either at 60 C in a controlled environmental room or at 100 C in a pressure aging vessel [AASHTO Provisional Standards, 1993]. Both dynamic shear properties and extensional properties were investigated. Polymer modification resulted in increased asphalt complex modulus at high temperatures, decreased asphalt complex modulus at low temperatures, broadened relaxation spectra, and improved ductility. Oxidative aging decreased asphalt temperature susceptibility, damaged the polymer network in binders, further broadened the relaxation spectrum, and diminished polymer effectiveness in improving asphalt ductility. 2003 Elsevier Science Ltd. All rights reserved.

published proceedings

  • FUEL

altmetric score

  • 3

author list (cited authors)

  • Ruan, Y. H., Davison, R. R., & Glover, C. J.

citation count

  • 176

complete list of authors

  • Ruan, YH||Davison, RR||Glover, CJ

publication date

  • October 2003