High ambient flexible pavement temperature, traffic loading, and abrasion caused by studded tires contribute to pavement rutting. The aim of this research is to identify the most significant factors that affect pavement rutting in Alaska, especially change in asphalt surface temperature following winter and during summer. Pavement rutting was simulated in the lab using the wheel–tracker machine based on AASHTO Designation T 324-11. Samples were tested under two different temperatures that approximate Alaska’s summer driving conditions. A ceramic belt was incorporated into the wheel to simulate studded tires. Additionally, rubber tires were used to simulate actual pavement friction forces. The wheel-tracker machine results showed no significant rutting from traffic loading simulation under cold temperatures. Lab results were compared with actual field wear rates collected from pavement resurfacing projects in Alaska. Field results showed higher average wear rates due to studded passenger vehicles (0.006 in. per 100,000 studded vehicles) than the average rut rates due to heavy wheel loads (0.003 in. per 100,000 trucks). Increased temperature of asphalt samples showed significant influence of both thermal and heavy loading effect on pavement rutting especially in summer time. In addition, results vary based on type of mix and testing wheel used. Furthermore, results showed that higher temperature provides higher average rut depth ranges from 2–2.6 inches/20,000 passes.


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    Titel :

    Influence of Asphalt Surface Temperature on Pavement Rutting in Cold Regions


    Beteiligte:

    Kongress:

    International Airfield and Highway Pavements Conference 2019 ; 2019 ; Chicago, Illinois


    Erschienen in:

    Erscheinungsdatum :

    2019-07-18




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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