Development and Implementation of the Asphalt Embrittlement Analyzer

This project involved the development of an acoustic emission-based Asphalt Embrittlement Analyzer (AEA) device as an advanced diagnostic tool to assess the degree of aging, crack resistance, and resiliency of near-surface properties in asphalt pavements. A sophisticated computer code was developed to analyze acoustic emission (AE) signals, to identify microcrack presence and location, and to produce a diagnostic schematic illustrating embrittlement temperature versus location (depth from surface of pavement). The AEA test offers: simplicity and portability; the ability to characterize the continuous and rapid change in surface properties as a function of depth from the surface; suitability for characterization of both binders and mixtures; relative insensitivity to sample size and fracture size effect; relative insensitivity to sample geometry; and suitability for determining the optimum timing and method(s) for preventive maintenance and rehabilitation. In addition, as a design tool, the AEA can be used to assess the effectiveness and proper use of rejuvenators in achieving the goal of restoring the pavement surface to a crack-resistant state.

  • Record URL:
  • Supplemental Notes:
    • This NCHRP-IDEA investigation was conducted by the University of Illinois at Urban-Champaign.
  • Authors:
    • Buttlar, William G
    • Reis, Henrique
    • Behnia, Behzad
  • Publication Date: 2015-7


  • English

Media Info

  • Media Type: Print
  • Edition: Final Report
  • Features: Figures; Photos; References; Tables;
  • Pagination: 35p
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 01598252
  • Record Type: Publication
  • Report/Paper Numbers: NCHRP IDEA Project 170
  • Files: TRIS, TRB, ATRI
  • Created Date: Apr 29 2016 10:32AM