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:
  • Floors
  • Bridges
  • Precast concrete
  • Bridges--New Hampshire--Floors
  • 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.
  More +
• Format:
  PDF
• Funding:
  13733D, A000(043)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17552/dot_17552_DS1.pdf
• File Type:
  [PDF - 1.81 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:f5d7ab157c7e3b69fe4871acccec50b8c836f3e6e4ace1df29b6934939167c4a