Iowa state highway 92 over drainage ditch #25 : performance evaluation - galvanized reinforcing bars, Louisa County, Iowa.
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields



Document Data
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page


Iowa state highway 92 over drainage ditch #25 : performance evaluation - galvanized reinforcing bars, Louisa County, Iowa.

Filetype[PDF-9.09 MB]

Select the Download button to view the document
This document is over 5mb in size and cannot be previewed


  • Corporate Creators:
  • Subject/TRT Terms:
  • Publication/ Report Number:
  • Resource Type:
  • Geographical Coverage:
  • Corporate Publisher:
  • Abstract:
    Several strategies are available to the Iowa Department of Transportation (IaDOT) for limiting

    deterioration due to chloride-induced corrosion of embedded reinforcing bars in concrete bridge decks.

    While the method most commonly used throughout the Midwestern United States is to construct concrete

    bridge decks with fusion-bonded epoxy-coated reinforcing bars, galvanized reinforcing bars are an

    available alternative. Previous studies of the in situ performance of galvanized reinforcing bars in service

    in bridge decks have been limited. IaDOT requested that Wiss, Janney, Elstner Associates, Inc. (WJE)

    perform this study to gain further understanding of the long-term performance of an Iowa bridge deck

    reinforced with galvanized reinforcing bars.

    This study characterized the condition of a bridge deck with galvanized reinforcing bars after about 36

    years of service and compared that performance to the expected performance of epoxy-coated or uncoated

    reinforcing bars in similar bridge construction. For this study, IaDOT selected the Iowa State Highway 92

    bridge across Drainage Ditch #25 in Louisa County, Iowa (Structure No. 5854.5S092), which was

    constructed using galvanized reinforcing bars as the main deck reinforcing. The scope of work for this

    study included: field assessment, testing, and sampling; laboratory testing and analysis; analysis of

    findings; service life modeling; and preparation of this report. In addition, supplemental observations of

    the condition of the galvanized reinforcing bars were made during a subsequent project to repair the bride


  • Format:
  • Collection(s):
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at