Analytical Approach to Estimate the Rheological Properties of Asphalt Binders

The importance of rheological properties of bituminous materials has grown in the United States since the early 1990s, in line with the SHRP. These rheological properties are now commonly used in materials specifications and as input into the Mechanistic–Empirical Pavement Design Guide. Thus an approach that used predictive models to estimate accurately the rheological properties of bituminous materials would be useful for pavement design. In the study reported here, a modeling approach was proposed with a basis in fundamental viscoelastic principles. To establish the models, a large data set, which was obtained from multiple efforts from numerous locations across the United States, was used. The database consisted of measured modulus values from mixtures with modified and unmodified binders and mixtures that had various amounts of reclaimed asphalt pavement (RAP). As a result, two predictive models were developed to estimate the binder shear modulus and phase angle, given the desired physical and mechanical properties of asphalt mixtures. These models could be used for the wide range of temperatures (from –10° to 54.4°C) recommended in the AASHTO TP62-03 test protocol. The predictive capabilities of the newly developed models were evaluated with the use of different data sets with various types of mixtures. The findings of this study should lead to enhanced knowledge of the rheological properties of binders in RAP mixtures at intermediate and high temperatures without the need to extract the binders from the mixtures.

• Record URL:
  • https://doi.org/10.3141/2447-06
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309295475
• Authors:
  • Kabir, Pooyan
  • Sakhaeifar, Maryam S
  • Newcomb, David
• Publication Date: 2014

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 51–60
• Monograph Title: Asphalt Materials and Mixtures 2014, Volume 4
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2447
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Binders; Bituminous mixtures; Mechanistic-empirical pavement design; Pavement design; Reclaimed asphalt pavements; Rheological properties
• Geographic Terms: United States
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01514977
• Record Type: Publication
• ISBN: 9780309295475
• Report/Paper Numbers: 14-1795
• Files: TRIS, TRB, ATRI
• Created Date: Feb 21 2014 3:16PM