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Evaluation of corrosion and corrosion control on interstate 89 bridge #30 and #31.

File Language:
English


Filetype [PDF - 12.33 MB]

Details

  • Creators:
    Remian, Dan
  • Corporate Creators:
    CD Engineering
  • Corporate Contributors:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-NH-RD-26962D
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    New Hampshire
  • Corporate Publisher:
    New Hampshire. Dept. of Transportation
  • Abstract:
    This report summarizes the evaluation of the performance of cathodic protection installed on I-89 bridges over ; Gile Pond Road (NH Route 114) during a rehabilitation project in 1987. ; Control bridges of I-89 over Hominy Pot Road, approximately 1.5 miles to the northwest, were also evaluated. ; The Hominy Pot Road bridges received a standard-practice NHDOT rehabilitation of an overlay of 1 ½ inches of ; concrete and a new membrane. The Gile Pond Road bridges each received a four-zone Raychem FEREX 100 ; anode cathodic protection system overlaid with concrete and no membrane. This system was tested after ; installation and records indicate it was working properly; however, within 6 years only one of the four zones was ; functioning as expected. Two zones of the four appear to have failed in 1990 and the system failed completely by ; 1998. ; Field surveys for this study took place in 2009 using an evaluation protocol as presentation in NCHRP report ; 558. The control bridges exhibited more substantial damage in comparison with higher rebar loss, in addition to ; amounts of concrete delamination and spalling. ; The cathodic protection system did provide some benefit to these bridges; however, the system failed and is ; no longer provides protection. The particular system used in this installation proved to be unsuccessful at ; most installations in the U.S.
  • Format:
    PDF
  • Funding:
    26962D, A004(051)
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/29153/dot_29153_DS1.pdf
  • File Type:
    Filetype[PDF - 12.33 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:ba446e6fde8d3f27ecfd2918a13f71669407816228a0e4234673e69f3af33590
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