Construction and monitoring of thin overlay and crack sealant test sections at the Pecos test track.

Details

• Creators:
  Scullion, Tom ; Wilson, Bryan ; Estakhri, Cindy
• Corporate Creators:
  Texas A&M Transportation Institute
• Corporate Contributors:
  United States. Federal Highway Administration ; Texas. Dept. of Transportation. Research and Technology Implementation Office
• Subject/TRT Terms:
  • Seal coats
  • Overlays (Pavements)
  • Test sections
  • Laboratory tests
  • Field tests
  • Pavement performance
  • Performance tests
  • Friction course
• Publication/ Report Number:
  FHWA/TX-14/9-1529-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Corporate Publisher:
  Texas A&M Transportation Institute
• Abstract:
  In this project, several crack sealant sections were constructed at the Pecos RTC. Six different sealants were ; applied in routed and non-routed configurations on both older and newer pavement. The following summer, ; the sections were revaluated including simulated heavy traffic testing. The sealants were also tested in the lab ; with a sealant adhesion test. Also in this this project three different thin overlays were constructed at the test ; track, these being the fine-graded permeable friction course, fine stone matrix asphalt and a crack attenuating ; mix. The fine PFC used at Pecos was also placed on Loop 338 around Odessa. These new thin overlays and ; crack sealant demonstration projects will be evaluated in coming years for future research projects. ; The researchers recommend applying more test sections on regularly trafficked pavements using a standard ; sealant (TxDOT Class A or B), and the two best performing sealants (AR Plus and Roadsaver 203). These ; should be applied to pavements with different levels of traffic and different amounts of crack movement. ; The thin overlays first demonstrated in these test section have now become widely used around Texas. They ; are now included in the most several specification (SS 3228 and Item 347) and sections have been ; constructed in at least half of the Texas Districts
  More +
• Format:
  PDF
• Funding:
  Project 9-1529
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28246/dot_28246_DS1.pdf
• File Type:
  [PDF - 2.62 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:840eb78491c24c9c81914ca14109121ee893ab8364882f884611e57309212277