This paper presents the results of laboratory fatigue characterization of recycled and warm-mix asphalt (WMA), which include unaged and long-term oven-aged conditions tested with an asphalt mixture performance tester. Various choices of failure criteria and pavement structural variations were considered. The laboratory results were compared with full-scale performance data. A softer performance grade (PG) was effective at improving the performance for 40% reclaimed asphalt pavement (RAP) recycled binder ratio (RBR) mixes. The softer PG was ineffective at improving the performance of tear-off recycled asphalt shingles, providing 20% RBR. WMA production improved slightly in the 20% RAP RBR mixes, but was less effective in softening the 40% RAP RBR mixes. Long-term aging increased the modulus by about 24% and decreased the fatigue resistance by about 40%. Aged mixes appear to agree better with full-scale accelerated loading facility cracking. Structural differences from ordinary construction variation and the choice of failure criterion can trigger a couple of mixtures to change ranking in predicted fatigue cracking, but the overall rank order of the whole data set is fairly consistent.


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    Titel :

    Comparison of Laboratory Fatigue Characteristics with Full-Scale Pavement Cracking for Recycled and Warm-Mix Asphalts


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:
    Li, Xinjun (Autor:in) / Gibson, Nelson (Autor:in)


    Erscheinungsdatum :

    01.01.2016




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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