Determination of Binder Glass Transition and Crossover Temperatures using 4-mm Plates on a Dynamic Shear Rheometer

The accurate rheological characterization of asphalt binder properties, as a function of pavement service life, is crucial to improving asphalt binder specifications, modifications, and formulation methods. Bitumen streams from refineries have experienced significant changes since the development of SHRP Superpave specifications as a result of economic, technical, and environmental reasons. Binder rheological behavior is divided into three regions: near glassy region, terminal region, and an intermediate “transition” region between them. At a reference frequency, these regions are separated by two characteristic temperatures: (1) the glass transition temperature (Tg), which is the temperature between the near glassy region and the intermediate region, and (2) the crossover temperature (TG’=G”), which is the temperature between the intermediate region and the terminal region. In this study, Tg and TG’=G” of 50 binders were obtained from a dynamic shear rheometer (DSR) using 4-mm parallel plates. Glass transition temperatures from DSR were compared with those obtained from modulated differential scanning calorimetry (DSC). Tg and TG’=G” were also compared with continuous low-PG temperatures and ?Tc parameter. Results indicate that critical temperatures based on the creep stiffness and the relaxation rate can be determined from Tg and TG’=G”, respectively. Furthermore, ?Tc parameter correlates well with the intermediate region temperature range (TIR).

• Record URL:
  • https://doi.org/10.1177/0361198119849571
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • The Standing Committee on Asphalt Binders (AFK20) peer-reviewed this paper (19-04811). © National Academy of Sciences: Transportation Research Board 2019.
• Authors:
  • Elwardany, Michael D
  • Planche, Jean-Pascal
  • Adams, Jeramie J
• Publication Date: 2019-10

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 247-260
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Volume: 2673
  • Issue Number: 10
  • Publisher: Sage Publications, Incorporated
  • ISSN: 0361-1981
  • EISSN: 2169-4052
  • Serial URL: http://journals.sagepub.com/home/trr

Subject/Index Terms

• TRT Terms: Bituminous binders; Glass; Rheological properties; Rheometers; Temperature; Viscoelasticity
• Uncontrolled Terms: Differential scanning calorimetry; Parallel plates
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01711061
• Record Type: Publication
• Report/Paper Numbers: 19-04811
• Files: TRIS, TRB, ATRI
• Created Date: Jul 16 2019 4:50PM