Influence of asphalt binder formulation and source on the performances of binders with the same continuous PG

Walaa S. Mogawer, Alexander J. Austerman, Kevin D. Stuart, Mihai Marasteanu, Munir Nazzal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The objectives of this research study were to determine the effects of asphalt binder formulation and source on the performance of binders with the same continuous Performance Grade (PG) using recently developed asphalt binder and mixture tests and provide recommendations, if needed, concerning the following: (1) the effect of asphalt binder formulation and source on performance, (2) the current PG specification and (3) the tests used in this study. Various asphalt binders were formulated so they would have the same continuous high and low PGs which would meet the AASHTO M 320 specifications for a PG 58-28 binder. Other binders were formulated to meet the AASHTO M 320 specifications for a PG 64-28 binder. Thus, there were two target PG's. Three sources of straight run asphalt binders were obtained, although one source was eliminated because for most of the modifiers obtained for this study, the target PGs could not be met. This showed that whether a continuous PG can be achieved through modification is dependent on binder source and modifier type. The modifiers used in the formulations consisted of two sources of re-refined engine oil bottoms (REOB), aromatic oil, polyphosphoric acid (PPA) and an air-blown asphalt, either alone or in combination. It is believed these modifiers are becoming more commonly utilized to supply the required PG asphalt binders for today's paving industry. Asphalt binder formulation and source had an effect on fatigue cracking cohesion, adhestion, moisture susceptibilty and non-load associated cracking even though the binders had closely matching continuous PGs based on high and low temperature properties. They had no effect on rutting performance except when measured by the MSCR, or thermal cracking performance except when measured by the EBBR. In conclusion, not all asphalt binders with the same continuous PG will perform identically in regard to all distresses.

Original languageEnglish (US)
Title of host publicationAsphalt Paving Technology 2018 - Journal of the Association of Asphalt Paving Technologists, AAPT 2018
EditorsRebecca S. McDaniel, Adam Hand, Geoffrey Rowe, Randy West, Audrey Copeland, Gaylon Baumgardner, Andrew Braham, Phil Blankenship
PublisherAssociation of Asphalt Paving Technologist
Pages305-343
Number of pages39
ISBN (Electronic)9781605955827
StatePublished - Jan 1 2018
EventAsphalt Paving Technology 2018, AAPT 2018 - Jacksonville, United States
Duration: Mar 18 2018Mar 21 2018

Publication series

NameAsphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions
Volume87
ISSN (Print)0270-2932

Conference

ConferenceAsphalt Paving Technology 2018, AAPT 2018
CountryUnited States
CityJacksonville
Period3/18/183/21/18

    Fingerprint

Keywords

  • AFM moisture susceptibility
  • Adhesion
  • Asphalt bond strength
  • DC(T)
  • EBBR
  • Fatigue cracking
  • Flow number
  • HWTD
  • I-FIT
  • LAS
  • Modifiers
  • Non-load associated cracking Black space diagram
  • Rutting MSCR
  • Thermal cracking
  • ΔTC

Cite this

Mogawer, W. S., Austerman, A. J., Stuart, K. D., Marasteanu, M., & Nazzal, M. (2018). Influence of asphalt binder formulation and source on the performances of binders with the same continuous PG. In R. S. McDaniel, A. Hand, G. Rowe, R. West, A. Copeland, G. Baumgardner, A. Braham, & P. Blankenship (Eds.), Asphalt Paving Technology 2018 - Journal of the Association of Asphalt Paving Technologists, AAPT 2018 (pp. 305-343). (Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions; Vol. 87). Association of Asphalt Paving Technologist.