Oxidation hardening kinetics of the rheological function G'/('/G') in asphalts

Pramitha Juristyarini, Richard R. Davison, Charles J. Glover

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The authors used 9 asphalts oxidized at various temperatures and pressures to determine the hardening kinetics for the DSR function, an easily measured and meaningful surrogate for 15C ductility that relates well to age-related binder deterioration. For each asphalt, there is a rapid initial period that slows to a constant rate period. This constant rate period can be represented by carbonyl formation (oxidation) rate times a hardening susceptibility (HS). For the DSR function and viscosity, the HS and initial jump were pressure-but not temperature-dependent. The DSR function initial jump was relatively higher than the viscosity initial jump. © 2011 Taylor & Francis Group, LLC.
Original languageEnglish (US)
Pages (from-to)2027-2036
Number of pages10
JournalPetroleum Science and Technology
Volume29
Issue number19
DOIs
StatePublished - Jul 29 2011

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology
  • Chemical Engineering(all)
  • Chemistry(all)
  • Fuel Technology

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