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Evaluation of the Asphalt Binder Quality Tester (2022) / Chapter Skim
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Section 3 - ABQT Project Selection and Research Process
Pages 10-12

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From page 10...
... When they were discussing the penetration test, a test that measures the hardness of a binder sample by measuring the depth of penetration from a needle with constant force in a 5-second period, they came up with a concept for developing a test that could measure the deflec­ tion of a binder more sensitively under force using a laser. After this meeting, Newman requested several binder samples and developed a prototype with funding through LTI.
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From page 11...
... sample, but in 2015, the nozzle was updated to be a circular nozzle employing multiple air jets that centered on a specific point of the sample, producing the deflection. Using the initial ABQT prototype, FHWA staff tested thousands of samples and verified the outputs from the device over the next 2 to 3 years.
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From page 12...
... 2020 Maryland State Highway Administration State DOT loaner for evaluation Table 3-2.   ABQT presentations and publications. Year Audience Presentation Content Asphalt Mixture Expert Task Group Meeting at North Carolina State University, Raleigh, NC Peterson Conference, Laramie, WY Texas DOT, Dallas, TX Introduction to the ABQT, PG algorithm not 2013 developed yet Georgia DOT, Atlanta, GA Utah DOT, Salt Lake City, UT Penn DOT, Harrisburg, PA Peterson Conference, Laramie, WY 2014 Progress report, introduction to shearography Canadian Technical Asphalt Association Peterson Conference, Laramie, WY 2015 Progress report, application cases AASHTO Subcommittee on Materials Sweden Traffikvert, T
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  • binder samples
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  • superpave center
  • validation data
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  • north central
  • eurobitume congress
  • maryland state
  • algorithm validation

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  • asphalt mixture
  • maine dot
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