Assessing techniques and performance of thin OGFC/PEM overlay on micro-milled surface : final report.

Details

• Creators:
  Lai, James S.
• Corporate Creators:
  Georgia Tech Research Corporation ; Georgia Institute of Technology. School of Civil and Environmental Engineering
• Corporate Contributors:
  Georgia. Dept. of Transportation. Office of Materials & Research ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bond strength (Materials)
  • Evaluation and assessment
  • Friction course
  • Milling
  • Overlays (Pavements)
  • Pavement maintenance
  • Pavement performance
  • Texture
  • Micro-milling
  • pavement rehabilitation
  More +
• Publication/ Report Number:
  FHWA-GA- 11-0707 ; 07-07
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Georgia
• Edition:
  Final report
• Corporate Publisher:
  Georgia. Dept. of Transportation. Office of Materials & Research
• Abstract:
  The practice of placing an open-graded friction course (OGFC) or a porous European mix (PEM) ; directly on top of a conventional milled surface has rarely been done in Georgia due to concerns that this ; rehabilitation method could potentially cause delamination of the surface layer due to poor bonding ; between the OGFC/PEM layer and the conventional milled surface. This report presents the research ; study for evaluating the quality of two micro-milling operations (one on I-75 and one on I-95) designed ; to reduce the potential for these issues. ; Results obtained from the I-75 project indicated that based on four years of satisfactory performance ; of the PEM overlay the use of a 95-percentile ridge-to-valley texture depth (RVD) parameter as the ; threshold value for compliance with the correction 3.2 mm RVD acceptance requirement could be too ; restrictive. Alternatively, Mean RVD was tentatively adopted on the I-95 project for compliance with the ; correction 3.2 mm RVD acceptance criteria. The research team concluded that the ultimate decision for ; selecting an appropriate RVD parameter for compliance with the correction 3.2 mm RVD acceptance ; requirement should be based on the long-term performance of the OGFC/PEM layer placed on the ; micro-milled surface.
  More +
• Format:
  PDF
• Funding:
  SPR00-0008-00-516
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/31155/dot_31155_DS1.pdf
• File Type:
  [PDF - 3.09 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:1bec57b266cd21489e72cb8bb9a4909a685ed3a7dade627e31107e8fd4b542c1