Performance monitoring pavements with thermal segregation in Texas.

Details

• Alternative Title:
  Project title: Performance histories of thermally segregated HMA
• Creators:
  Sebesta, Stephen ; Scullion, Tom
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Asphalt concrete pavements
  • Cracking of asphalt concrete pavements
  • Pavement cracking
  • Thermal stresses
  • Pavements, Asphalt concrete--Cracking--Texas
  • Pavements, Asphalt concrete--Thermal properties--Texas
• Publication/ Report Number:
  FHWA/TX-12/0-6080-1 ; 0-6080-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Dec. 2007-Aug. 2011.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  This project conducted work to investigate the performance of asphalt surface mixtures that exhibited ; thermal segregation during construction. From 2004 to 2009, a total of 14 construction projects were ; identified for monitoring. Five of these projects did not exhibit thermal segregation, while the remaining ; projects did exhibit thermal segregation. In all cases, a Pave-IR thermal profiling system collected data ; during construction. Follow-up surveys using visual examination, ground-penetrating radar, and in some ; cases focused coring, were used to evaluate whether the locations of thermal segregation showed significant ; distress. The projects constructed free of thermal segregation have not shown any distress due to ; segregation. Results from projects constructed with thermal segregation present were mixed. In some cases, ; traffic action seems to have homogenized the pavement surface. On other projects, evidence of thermal ; segregation still exists shown by different surface appearance and localized changes in radar data. One ; project showed evidence of cracking due to segregation. Core results from field projects suggested the ; segregated locations will be more prone to cracking. This research project’s results certainly do not show ; that thermally segregated locations will definitely fail within three to seven years of service; however, the ; results do show that instances of thermal segregation may continue to be anomalous locations in the layer, ; even after subsequent overlays, and exhibit properties that could lead to failures in the pavement structure.
  More +
• Format:
  PDF
• Funding:
  0-6080
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24203/dot_24203_DS1.pdf
• File Type:
  [PDF - 18.51 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:e97d456d9fbf82544f6b5bdedd3e7a40071b6e3dbf6c8c395741dd608de7f7652db7a5f2d6995dcfc49158166b99cf63fb6246046b6d9825d53bb96012441594