Laboratory testing of precast paving notch system.

Details

• Corporate Creators:
  Bridge Engineering Center
• Subject/TRT Terms:
  Bridge Approaches Feasibility Analysis Laboratory Tests Notching (Cutting) Precast Concrete Pavements Structural Analysis
• Publication/ Report Number:
  RB01-005
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa. Dept. of Transportation. Office of Bridges and Structures
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures
• Abstract:
  Bridge approach pavement settlement and the resulting formation of ‘bumps’ at the end
  
  of bridges is a recurring problem on a number of Iowa bridges. One of the contributing
  
  factors in this settlement is failure of the bridge paving notch. A paving notch (also
  
  known as a corbel or a paving support) consists of a horizontal shelf constructed on the
  
  rear of a bridge abutment and is used to support the adjacent roadway pavement. Over
  
  time, these paving notches have been observed to deteriorate/fail due to a number of
  
  conditions including horizontal abutment movement due to seasonal temperature
  
  changes, loss of backfill materials by erosion, inadequate construction practices,
  
  foundation soil settlement, heavy traffic loads, salt brine that leaks through the expansion
  
  joint, and an open expansion joint that tends to fill with dirt and debris and ‘push’ the
  
  approach pavement off the paving notch. In some cases, the condition of the paving
  
  notch deterioration may not be noticed until the deterioration reaches a critical state and
  
  the approach pavement is removed.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:39b440475ac6271244a54e3dcc82c0b260aef9d3ca39a9a072fdb6ffe6ca40c8
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26485/dot_26485_DS1.pdf
• File Type:
  [PDF - 510.54 KB ]