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    STP1241

    Characterization of Failure Properties of Asphalt Binder

    Published: 01 January 1995


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    Abstract

    This paper describes the characterization of the uniaxial failure properties of the eight core asphalt cements from the Strategic Highway Research Program (SHRP). Uniaxial tensile failure properties of asphalts are highly dependent on temperature and loading (elongation) rate. The tensile failure properties of the eight core asphalts were obtained for various temperatures ranging from -30 to 0°C (22 to 30°F) and elongation rates ranging from 2.5 to 50 mm/min (0.1 to 2 in/min). Mastercurves were obtained for failure stress, failure strain, and failure energy versus loading time using time-temperature superposition. The time-temperature shift factors were obtained from rheological studies of asphalts using dynamic mechanical testing conducted separately but as a part of the same project. A function describing the failure mastercurves was developed.

    Keywords:

    tensile properties, asphalt cement, failure, failure energy, mastercurves, time-temperature superposition, rheological properties, viscoelasticity, stress-strain curves


    Author Information:

    Dongré, R
    Research Assistant, The Pennsylvania State University, University Park, PA

    Sharma, MG
    Professor of Engineering Mechanics, The Pennsylvania State University, University Park, PA

    Anderson, DA
    Professor of Civil Engineering, The Pennsylvania State University, University Park, PA


    Committee/Subcommittee: D04.44

    DOI: 10.1520/STP18191S