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A simple test procedure for evaluating low temperature crack resistance of asphalt concrete : executive summary report.
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    Executive summary report.
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  • Abstract:
    Low temperature cracking is one of the major

    distress modes in asphalt pavement and is

    disastrous to pavement performance and service

    life. A poor riding surface leads to an increase in

    maintenance and eventual early replacement of

    the pavement. Currently, there are two

    approaches to characterize the low temperature

    thermal cracking potential of asphalt concretes; (1)

    mechanistic-empirical analysis (Superpave

    Indirect Tensile Creep and Strength Test, IDT)

    and performance model and (2) a torture test

    (Thermal Stress Restrained Specimen Test,

    TSRST). Both methods have been validated with

    field performance data and predict the low

    temperature cracking potential of asphalt concrete

    mixes. However, neither test can be readily used

    as a routine test because of the complex test and

    analysis procedures for IDT and the costly

    specialized equipment, and the difficulty

    producing beam specimens for TSRST. A new

    simple test procedure is needed to evaluate the

    low temperature cracking potential for a single

    severe freezing event and thermal fatigue for the

    environment and materials commonly used in


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