IDEAS home Printed from https://ideas.repec.org/p/cdl/itsdav/qt3fm0469p.html
   My bibliography  Save this paper

Support for Superpave Implementation: Round Robin Hamburg Wheel-Track Testing

Author

Listed:
  • Mateos, A.
  • Jones, D.

Abstract

A round robin testing program was undertaken between 20 participating laboratories in California to assess the reproducibility of Hamburg Wheel-Track (HWT) test results as part of a Superpave implementation initiative. Each laboratory conducted four HWT tests. Two of the tests were conducted on gyratory-compacted specimens prepared by the University of California Pavement Research Center (UCPRC), and the other two were conducted on gyratory-compacted specimens prepared by each of the participating laboratories using loose mix supplied by the UCPRC. A three-quarter inch mix with five percent PG 64-16 asphalt binder content was sampled from a northern California asphalt plant for the study. Laboratories reported test results in terms of rut depth after 5,000, 10,000, 15,000, and 20,000 wheel passes; number of passes to 0.5 in. (12.5 mm) rut depth; creep slope; stripping slope; and stripping inflection point. Some laboratories also submitted raw test data for further analysis by the UCPRC. An analysis of variance was used to determine which factors had a significant influence on the test results and to determine the indices of precision of the different result variables. Indices of precision could not be determined for all variables due the relatively good performance of the mix. Single-operator variability was relatively high for all variables. Between-laboratory variability was shown to be strongly related to several measurement and result-interpretation aspects that are not fully defined in the AASHTO T 324 test method. This variability was clearly reduced when unique criteria were used in the data analysis.

Suggested Citation

  • Mateos, A. & Jones, D., 2017. "Support for Superpave Implementation: Round Robin Hamburg Wheel-Track Testing," Institute of Transportation Studies, Working Paper Series qt3fm0469p, Institute of Transportation Studies, UC Davis.
    • Handle: RePEc:cdl:itsdav:qt3fm0469p
    as

    Download full text from publisher

    File URL: https://www.escholarship.org/uc/item/3fm0469p.pdf;origin=repeccitec
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:cdl:itsdav:qt3fm0469p. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Lisa Schiff (email available below). General contact details of provider: https://edirc.repec.org/data/itucdus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.