A study was performed to evaluate whether time-temperature superposition principles would continue to apply to the behavior of asphalt concrete beyond the commonly assumed small strain (<100 με) limits. A series of unconfined uniaxial compression constant crosshead displacement rate tests were performed to large-strain values. The measured axial stress versus axial strain data were cross-plotted to produce stress versus reduced time master curves and corresponding temperature shift functions at various strain levels to determine the maximum strain level at which time-temperature superposition remains valid. The results suggest that asphalt concrete remains a thermorheologically simple material well into the postpeak region (i.e., that time-temperature superposition is valid throughout the useful stress-strain response). The results further suggest that the temperature shift function aT may be only a weak function of strain level. For many practical engineering purposes, however, the differences between the small-strain and large-strain temperature shift relations may be of negligible importance.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Time-Temperature Superposition for Asphalt Concrete at Large Compressive Strains


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2002-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Influence of asphalt binder on time-temperature shift function for asphalt concrete at large strains

    Chompoorat, Thanakorn / Likitlersuang, Suched | Online Contents | 2016


    Influence of asphalt binder on time-temperature shift function for asphalt concrete at large strains

    Chompoorat, Thanakorn / Likitlersuang, Suched | Springer Verlag | 2016



    Tensile Versus Compressive Moduli of Asphalt Concrete

    Khanal, Punya P. | Online Contents | 1995