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    Continued Field Evaluation of Precutting for Maintaining Asphalt Concrete Pavements with Thermal Cracking

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    Author
    Liu, Jenny
    Zhao, Sheng
    McHattie, Robert
    Keyword
    Alaska
    Asphalt concrete
    Sawing
    transverse cracking
    Cracking
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/9587
    Abstract
    In continuation of a previously completed project entitled Evaluate Presawn Transverse Thermal Cracks for Asphalt Concrete Pavement, this project was a further effort to understand important variables in the thermal cracking process through continued field monitoring of three precutting test sites in Interior Alaska. The test sites included (1) Phillips Field Road, precut in 1984 (≈ west ¼ mile of this road), (2) Richardson Highway precut in 2012 (≈ MP 343–344), and (3) Parks Highway precut in 2014 (≈ MP 245–252). Preliminary results at relatively short periods (up to 4 years) indicate that precutting is an economically promising way to control natural thermal cracks. Even short-term economic benefits appear to range between about 2% and 21%. The degree to which precutting works for an AC pavement appears to be a function of the thickness and general structural robustness of new construction. Shorter precut spacing, along with stronger and/or thicker pavement structures, looks promising with respect to crack control. Continuing evaluation and monitoring of test sections are needed to recommend an effective design methodology and construction practice for Alaska and cold areas of other northern states.
    Date
    2017-08
    Publisher
    Center for Environmentally Sustainable Transportation in Cold Climates
    Type
    Technical Report
    Collections
    CESTiCC Project Reports

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