Two full-scale pavement sections built in 2012 at the National Center for Asphalt Technology (NCAT) Test Track were used to assess the structural contribution of cold central-plant recycling (CCPR) with 100% reclaimed asphalt pavement (RAP) and foamed asphalt as a recycling agent (CCPR-foam). The two test sections performed effectively, presenting no evidence of pavement damage during a two-year period of accelerated traffic loading in which 10 million equivalent single-axle loads (ESALs) were applied. Furthermore, ride quality was not significantly affected with the application of traffic. Frequent deflection testing over the duration of the study revealed that CCPR-foam exhibited a similar response to temperature as that observed for conventional asphalt concrete (AC). A procedure based on backcalculated modulus data was followed to determine the structural layer coefficients for the CCPR-foam layers. The layer coefficients were found to vary from 0.14 to 0.15    cm 1 ( 0.36 0.39    in. 1 ). Quantifying the structural coefficient allows this material to be effectively used in the AASHTO empirical method of pavement thickness design currently employed by many U.S. states.


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    Titel :

    Structural Coefficients of Cold Central-Plant Recycled Asphalt Mixtures


    Beteiligte:


    Erscheinungsdatum :

    2017-02-24




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt





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