Millabrading Test Evaluation: Norwood Road: M.P. 287.02 (Southbound Interstate 5): Construction Report
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Millabrading Test Evaluation: Norwood Road: M.P. 287.02 (Southbound Interstate 5): Construction Report

Filetype[PDF-247.89 KB]


English
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Details:

  • Creators:
    Hunt, Liz
  • Corporate Creators:
    Oregon. Dept. of Transportation. Research Group
  • Corporate Contributors:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-OR-RD-00-02
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Edition:
    Construction October – November 1998
  • Corporate Publisher:
    Oregon. Dept. of Transportation. Research Group
  • Abstract:
    The Oregon Department of Transportation (ODOT) continues to investigate alternatives for rehabilitating the rutting in concrete pavement sections. The millabrading system was proposed as an option to reduce the middle lane rut depths in a continuously reinforced portland cement concrete pavement to improve driving conditions. The system includes a high speed rotomill with a modified drum used to level out the ruts, followed by a shot blaster with steel shot to provide a uniform, skid resistant wearing surface.

    The Oregon Department of Transportation (ODOT) continues to investigate alternatives for rehabilitating the rutting in concrete pavement sections. The millabrading system was proposed as an option to reduce the middle lane rut depths in a continuously reinforced portland cement concrete pavement to improve driving conditions. The system includes a high speed rotomill with a modified drum used to level out the ruts, followed by a shot blaster with steel shot to provide a uniform, skid resistant wearing surface. A post construction inspection measured random rut depths of 10 to 16 mm in the middle lane. Some rutting was expected, however, not to the degree measured. Insufficient survey data may have impacted the design and subsequent outcome. Fullwidth treatment may have eliminated the ruts. In addition, the longitudinal joints appeared spalled. A petrographic analysis indicated that there is no micro-cracking that may be detrimental to the durability of the section. District Maintenance staff report no problems with the section. Field test results indicate that in-vehicle noise levels are noticeably lower after construction.Pavement friction values increased following the grinding and additionally after the shot blasting. Friction values, however, have continued to decrease for the last eight months following construction. The pavement ride or roughness appears to be slightly reduced following the millabrading process. 38 p.

  • Format:
    PDF
  • Funding:
    FHWA Special Project 205
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