Field Evaluation of Roller Integrated Intelligent Compaction Monitoring

Louisiana Department of Transportation and Development (DOTD) conducted a demonstration project evaluating intelligent compaction (IC) technology. The project selected a project site and developed specifications, which allowed and incorporated the IC rollers on the project. The research shadowed the normal acceptance process, collecting roller integrated compaction monitoring (RICM) data from each pavement layer as measurement passes (soil) and compaction passes for hot mix asphalt (HMA). Standard specifications and quality assurance acceptance testing governed the project. Research testing supplemented the standard acceptance testing conducted by District 03. The DOTD IC specification went through the competitive bidding process and produced a wide range of cost numbers. The item for the soil roller had a range of bids from $15,000 to $95,000. The item for the asphalt roller had a range in bids from $7,000 to $100,000. The range may be attributed to the knowledge and familiarity (or lack of) within Louisiana regarding the intelligent compaction technology. This project sought to increase the knowledge base in Louisiana. Louisiana Transportation Research Center (LTRC) therefore hosted a Showcase on the pilot project, which provided presentations from researchers, Federal Highway Administration (FHWA), and manufacturers. The project was well attended and well received. Manufacturer equipment and software training/support are critical to the success of an IC project, which includes good communication throughout. In this case, the contractor had relationships with each roller manufacturer, and LTRC was able to interact with roller and manufacturer. Initial setup of roller and global positioning system (GPS) connections was a challenge with both project rollers, as LTRC local roller representatives and the contractor were generally learning about the details of the technology for the first time. National roller representatives were helpful, but could not be on site at all times. The contractor’s survey staff became proficient in the two systems; and needed GPS knowledge; capable, accurate, and reliable GPS equipment; as well as the ability to connect properly and effectively with the rollers’ on-board software. Contractor roller operators can adjust patterns and time based on real-time reactions, and the roller display can show and track coverage, passes, and compaction effort (measurement values) hopefully speeding production and assisting with quality control. Weak areas can be identified for rework. Departments of Transportation benefit from continuous coverage records (vs. point tests at roughly 1000-ft. spacing), and accelerated construction through the contractor’s IC use (appropriate passes/energy). The technology promotes consistent and uniform pavement layers that can be visually verified. The recommendations include (1) recommend that the contracting community examine and evaluate the benefits of each IC roller system, and hopefully utilize a system to increase confidence, consistency, quality, and efficiency in production; (2) continue to promote the technology to the contracting community will help spread knowledge regarding these systems and the potential benefits they offer; (3) reevaluate the specification in the future as the technology becomes more mainstream; and (4) delay implementing quality assurance and acceptance standards via DOTD through the use of these rollers in Louisiana, but consider additional projects and presentations to increase knowledge within the contracting community.

  • Record URL:
  • Corporate Authors:

    Louisiana Transportation Research Center

    Baton Rouge, LA  United States 

    Louisiana Department of Transportation and Development

    1201 Capitol Access Road, P.O. Box 94245
    Baton Rouge, LA  United States  70804-9245

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Gautreau, Gavin P
    • Abu-Farsakh, Murad
    • Cooper III, Samuel B
  • Publication Date: 2016-4

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Maps; Photos; References; Tables;
  • Pagination: 520p

Subject/Index Terms

Filing Info

  • Accession Number: 01599866
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/LA.15/555, LTRC Project Number: 06-3GT
  • Contract Numbers: SIO: 30000480
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: May 18 2016 4:50PM