Precast concrete deck panel performance on long span, high traffic volume bridges : final report.

Details

• Creators:
  Whittemore, Mark D. ; Stamnas, Peter E. ; Wellman, Raymond
• Corporate Creators:
  New Hampshire. Dept. of Transportation. Bureau of Materials and Research
• Subject/TRT Terms:
  Bridges Bridges--New Hampshire--Floors Floors Precast Concrete Precast Concrete Construction--New Hampshire
• Publication/ Report Number:
  FHWA-NH-RD-13733D
• Resource Type:
  Tech Report
• Geographical Coverage:
  New Hampshire
• Edition:
  Final report.
• Corporate Publisher:
  New Hampshire. Dept. of Transportation. Bureau of Materials and Research
• Abstract:
  The NHDOT prohibited the use of partial depth precast deck panels on its long span, high traffic volume bridges until it could investigate if the precast
  
  slabs and the concrete overpour were acting in a composite manner. The NHDOT also wanted to ensure that there was adequate transfer of traffic loads
  
  between the panels without causing reflective cracking. The purpose of this project was to investigate these two issues.
  
  The NHDOT reconstructed the deck of the I-393 bridge over the Merrimack River in Concord using precast concrete slabs and a concrete overpour in
  
  2002-2003. Cores were taken from this bridge deck to evaluate the composite behavior of the slabs and overpour and cracking was evaluated. Cores
  
  were taken before the introduction of traffic and then after the deck had been exposed to traffic for several months. Cracking was evaluated before and
  
  after traffic.
  
  The cores taken were subjected to tensile and shear strength testing across the panel/overpour interface and were found to perform satisfactorily. The
  
  tests provided conclusive evidence that there was excellent bond between the deck slabs and the overpour and that the strength of the bond was actually
  
  improving slightly over time. An inspection of the deck before and after traffic loading revealed that the panels were adequately transferring traffic loading
  
  without causing reflective cracking. Based on these results the NHDOT will permit the use of this type of deck construction on long span, high traffic
  
  volume bridges.
  
  
• Format:
  PDF
• Funding:
  13733D, A000(043)
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:f5d7ab157c7e3b69fe4871acccec50b8c836f3e6e4ace1df29b6934939167c4a
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17552/dot_17552_DS1.pdf
• File Type:
  [PDF - 1.81 MB ]