Innovative solutions to buried Portland concrete cement roadways : construction report.
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Innovative solutions to buried Portland concrete cement roadways : construction report.

Filetype[PDF-29.94 KB]


  • 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 Concrete Cement

      (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.

      Concrete is a rigid pavement capable of supporting weight with little deflection. Bituminous is a

      flexible pavement that 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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