Relating Dynamic Shear Modulus (G*) of Performance Grade (PG) Asphalt Binders to Nanoindentation Stiffness (E)

Traditionally, asphalt binder is characterized by a dynamic shear rheometer, which applies a shear load on a bulk volume of liquid asphalt binder to determine shear modulus (G*). Recently, a nanoindentation test can characterize an asphalt binder film in the form of coating around roadway aggregates, which is more practical. In a nanoindentation test, a sharp tip is used to indent an asphalt film while residing on an aggregate surface to determine nanoindentation modulus (E). This study evaluates whether there is a relation between G* and E. For both tests, replicate samples were conditioned in three ways: unaging, rolling thin film oven aging, and pressure vessel aging. Results show that the E-value is approximately 2 to 6 times larger than the G*-value based on all samples/conditioning.

  • Record URL:
  • Supplemental Notes:
    • This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    University of New Mexico, Albuquerque

    Department of Civil Engineering
    Albuquerque, NM  United States  87131-0001

    SOLARIS University Transportation Center

    University of Nevada
    Reno, NV  United States 

    New Mexico Department of Transportation

    Sante Fe, NM  United States  87504-1149

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Authors:
    • Faisal, Hasan M
    • Mannan, Umme Amina
    • Tarefder, Rafiqul A
  • Publication Date: 2015-9-31


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; Photos; References; Tables;
  • Pagination: 31p

Subject/Index Terms

Filing Info

  • Accession Number: 01614926
  • Record Type: Publication
  • Created Date: Oct 13 2016 7:56AM