U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Introduction of fracture resistance to the design and evaluation of open graded friction courses in Florida : final report, July 2009.

File Language:
English


Details

  • Creators:
    Roque, Reynaldo ; Koh, Chulseung ; Chen, Yu ; Sun, Xingsong ; Lopp, George
  • Corporate Creators:
    University of Florida. Dept. of Civil and Coastal Engineering
  • Corporate Contributors:
    Florida. Department of Transportation. Research Center
  • Subject/TRT Terms:
  • Publication/ Report Number:
    00054539
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Texas
  • Edition:
    Final report; June 17, 2005-April 30, 2009
  • Corporate Publisher:
    Florida Department of Transportation
  • Abstract:
    A dog-bone direct tension test (DBDT) to accurately determine tensile properties of asphalt concrete, ; including OGFC, was conceived, developed and validated. Resilient modulus, creep, and strength tests ; were performed at multiple temperatures on dense-graded and OGFC mixtures produced two ; aggregates with both the newly developed DBDT and existing Superpave IDT. Excellent ; correspondence was observed between properties determined from each type of test, indicating that ; fundamental properties can be accurately determined using either test. Differences in strain rate ; between the two tests resulted in expected differences in strength and failure strain. Creep compliance ; was highly correlated between the two tests but was lower for IDT than for DBDT, which can be ; attributed to the higher confinement in IDT. It was concluded that DBDT compliance is more ; appropriate for uniaxial stress states, while IDT compliance is more appropriate for biaxial stress states. ; Continued use of Superpave IDT was recommended because it is much more practical. A composite ; specimen (OGFC on HMA) direct tension fracture test was developed to evaluate the effects of OGFC ; and interface conditions on top-down cracking performance. Results indicated that use of polymer ; modified bonding agents can significantly improve cracking resistance of pavements with OGFC. ; Continuum and micro-mechanics based FEM models developed to predict cracking performance of ; composite mixtures indicated that traditional OGFC accelerates development of top-down cracking and ; should not be assigned a structural benefit in pavement design. The modeling results also indicated the ; benefit of polymer-modified bonding agents. The benefits of using micro-mechanics to optimize ; OGFC design were illustrated. Recommendations were made for continued development and validation ; of testing and modeling of composite systems to optimize OGFC design.
  • Format:
    PDF
  • Funding:
    BD545-53
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/16911/dot_16911_DS1.pdf
  • File Type:
    Filetype[PDF - 6.98 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:4fa20495b282220c0fcbceb0b82cac7e3ec45151e27a4b0ae76f1c2f918cb4b6
PREVIOUS
File Language:
English
ON THIS PAGE
Details
 Found an issue?
Send us an email at:
publishinghd@cdc.gov
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP