Innovative solutions to buried portland cement concrete roadways.

Details

• Creators:
  Marquis, Brian
• Corporate Creators:
  Maine. Dept. of Transportation. Transportation Research Division
• Subject/TRT Terms:
  Benefit Cost Analysis Bituminous Pavements Experiments Innovation Longitudinal Cracking Paved Shoulders Portland Cement Concrete Rehabilitation (Maintenance) Rigid Pavements Settlement (Structures)
• Publication/ Report Number:
  99-11
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maine
• Corporate Publisher:
  Maine. Dept. of Transportation
• Abstract:
  Forty or more years ago hundreds of miles of Maine highways were constructed of Portland Cement
  
  Concrete (PCC) to a width of 5.5 to 6.0 m (18 to 20 ft). Since that time these same highways have been
  
  paved and widened to 6.7 or 7.3 m (22 or 24 ft) with hot bituminous pavements to accommodate
  
  increased traffic volumes and enhance roadway safety. Bituminous materials were used in place of
  
  concrete due to the ease of placement and price of material.
  
  PCC is a rigid pavement capable of supporting weight with little deflection. In contrast, hot bituminous
  
  pavement is flexible and will flex to distribute weight across the roadway. When the highway is expanded
  
  beyond the concrete slab, there is a sharp decrease of support for the 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
  
  roughly 0.3 to 1 m (1 to 3 ft) 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.
  
  It is the intent of this experimental project to explore various shoulder treatments to increase support of
  
  the extended roadway and hopefully decrease or eliminate deterioration of the shoulder pavement.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:b8207219913351a9959060315e1ea8a34ae7f6746ff1663eaef06007808d3dbe
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27308/dot_27308_DS1.pdf
• File Type:
  [PDF - 1.26 MB ]