Innovative solutions to buried portland cement concrete roadways : first interim report.
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Innovative solutions to buried portland cement concrete roadways : first interim report.

Filetype[PDF-1.87 MB]


  • English
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    Details:

    • Creators:
      Marquis, Brian
    • Corporate Creators:
      Maine. Dept. of Transportation. Transportation Research Division
    • Subject/TRT Terms:
    • Publication/ Report Number:
      99-11
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      Maine
    • Corporate Publisher:
      Maine. Dept. of Transportation
    • Abstract:
      Maine has hundreds of miles of highway that were constructed of Portland Cement

      Concrete (PCC) roughly 6 to 6.1 meters (18 to 20 feet) wide forty or more years ago. Since that

      time these same highways have been paved and widened to 6.7 or 7 meters (22 or 24 feet) with

      hot bituminous pavements to accommodate increased traffic volumes. Bituminous materials

      were used instead of concrete due to the ease of placement and price of material.

      PCC is a rigid pavement capable of supporting weight with little deflection. Hot

      bituminous pavement is flexible and will bend to distribute weight across the roadway. When

      the highway is expanded beyond the concrete slab there is a sharp decrease of support for this

      bituminous pavement resulting in settlement over prolonged use. This settlement may also be

      compounded by poor drainage capabilities of the underlying soils causing the unsupported

      pavement to drop lower than the existing height of the concrete supported pavement. This

      creates a longitudinal crack aligning with the concrete slab edge about 0.3 to 1 meter (1 to 3

      feet) from the right edge of pavement. Pavement to the right of this crack deteriorates to the

      point where maintenance crews attempt to smooth it out with cold patch year after year. Paving

      over the entire roadway is an option but, due to reflective cracking, the edge of pavement begins

      to deteriorate within 2 or 3 years.

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