Implementation of the Florida Cracking Model into the Mechanistic-Empirical Pavement Design

Top-down cracking has been found to be a predominant mode of distresses of asphalt pavements in Florida. Therefore, it is important to accommodate top-down cracking in the design of asphalt mixtures and pavement structures. After a multi-year study on top-down cracking supported by the Florida Department of Transportation (FDOT), the University of Florida has developed a top-down cracking model based on the HMA fracture mechanics. This report presents the implementation of the Florida cracking model into a mechanistic-empirical (ME) flexible pavement design framework. Based on the energy ratio (ER) concept, a new ME pavement design tool for top-down cracking has been developed. In the Level 3 ME design, a series of material models were developed for estimation of the time-dependent material properties. With incorporation of the material properties models, the design tool is capable of performing pavement thickness design as well as pavement life prediction for top-down cracking in Florida. The thickness design is optimized for different traffic levels, mixture types, and binder selections. The AC thickness optimization is an automated process. This design tool has been packed into an interactive Windows-based software, making it convenient to use for pavement design engineers.

  • Corporate Authors:

    University of Florida, Gainesville

    Department of Civil and Coastal Engineering, P.O. Box 116580
    Gainesville, FL  United States  32611-6580

    Florida Department of Transportation

    Structures Research Center, 605 Suwannee Street
    Tallahassee, FL  United States  32399

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Birgisson, Bjorn
    • Wang, Jianlin
    • Roque, Reynaldo
  • Publication Date: 2006-12


  • English

Media Info

  • Media Type: Print
  • Edition: Final Report
  • Features: Appendices; Figures; Tables;
  • Pagination: 103p

Subject/Index Terms

Filing Info

  • Accession Number: 01053605
  • Record Type: Publication
  • Report/Paper Numbers: UF #0003932
  • Contract Numbers: BD-545, RPWO 20
  • Created Date: Jun 26 2007 7:35PM