Comprehensive evaluation of compaction of asphalt pavements and development of compaction monitoring system.

Details

• Alternative Title:
  Project title: Develop practical guidelines for the compaction of HMA or WMA
• Creators:
  Kassem, Emad ; Scullion, Tom ; Masad, Eyad ; Chowdhury, Arif ; Liu, Wenting ; Estakhri, Cindy ; Dessouky, Samer
• 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 pavements
  • Compaction
  • Asphalt concrete pavements Pavements, Asphalt concrete--Texas
• Publication/ Report Number:
  FHWA/TX-12/0-6992-2;0-6992-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2009¿Aug. 2011.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  This study aimed to conduct a comprehensive evaluation of compaction of asphalt pavements and ; develop software for monitoring field compaction in real time. In the first phase of this study, the researchers ; built several test sections that were constructed using different asphalt mixtures and various compaction ; methods. The results of these experiments were used to determine the effects of compaction temperature, ; compaction method, mixture design, and base type on the compactability of asphalt mixtures. The ; researchers found that the efficiency of the compactive effort across the steel rollers was non-uniform. A ; point on the mat closer to the center of the roller was subjected to more compaction than a point closer to the ; edge of the roller. The compaction temperature was found to have a great effect on compaction irrespective ; of mixture type. The researchers presented a method for predicting the density of asphalt pavements in real ; time. This method utilizes the location of the roller on the mat and the compaction curves for each roller to ; predict the density. The predicted density was close to the measured one. ; In the second phase of this study, the researchers developed a system for monitoring and ; documenting the compaction process of asphalt mixtures. This system is called the compaction monitoring ; system (CMS). The CMS uses the latest global positioning system technologies and various sensors to ; provide full coverage of the newly constructed mat. The CMS shows maps of coverage, compaction index, ; and temperature of the first roller pass in real time. The CMS was found to be simple and easy to install and ; use. The CMS was able to show some inconsistencies in the compaction process, for example, unequal ; converge across the mat, non-uniform temperature, and significant delay in compaction after placement of ; the mixtures. The CMS documents the compaction process for the whole project, and the data are saved on ; the computer. The data can be opened using the same software for reviewing the whole compaction process.
  More +
• Format:
  PDF
• Funding:
  0-6992
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24202/dot_24202_DS1.pdf
• File Type:
  [PDF - 8.03 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:d67ee77e6159be92847b354d92099d081dcce564e347d192c0dd94d2daba55c50fa6dd02b5f53183c8e49e797de2534522e05a7acaec7bbbda2b8d16cda897ab