Five Year Monitoring of Corrosion Field Specimens

This project is a follow up to a current study at the University of Hawaii on the "Evaluation of Concrete Durability and Corrosion Resistance of Concrete Structures in Marine Environment" using Hawaiian cement and aggregates. The intent of the program was to evaluate the corrosion resistance of various concrete mixtures and admixtures common to Hawaii. The original program consisted of three phases as described briefly below. Phase I involved field testing of in-service concrete at various harbor piers and docks. Phase II involved the fabrication and monitoring of laboratory specimens under accelerated corrosion conditions. Phase III involved the fabrication and field placement of 21 test panels for long term field exposure. These will be placed on a rip-rap slope at Pier 38. The intent is to leave the panels in place indefinitely, with occasional monitoring to evaluate their performance in a marine splash zone. The field panels are intended to provide real life confirmation of the results of accelerated laboratory tests. The panels represent more realistic size specimens than the small laboratory test specimens. The field panels are exposed to true field conditions in a typical harbor location as opposed to the two-week cycles of high concentration salt water used in the laboratory. The panels are also exposed to the variability of field atmospheric conditions in contrast to the stable temperature and relative humidity under laboratory conditions. Based on the results of previous laboratory tests and the field test monitoring proposed in this project, recommendations will be made to the Harbors Division regarding corrosion inhibiting measures for future construction. It is also hoped that correlation between the laboratory and field specimen results will lead to a useful predictive model that can be applied to various corrosion inhibiting measures typically used by the Harbors Division.

    Language

    • English

    Project

    • Status: Active
    • Funding: $50032.00
    • Contract Numbers:

      51397

      HWY-L-2003-03

    • Sponsor Organizations:

      Federal Highway Administration

      300 Ala Moana Boulevard
      Honolulu, HI  United States  96850

      Hawaii Department of Transportation

      869 Punchbowl Street
      Honolulu, HI  United States  96813-5097
    • Project Managers:

      Hiraki, Randal

    • Performing Organizations:

      University of Hawaii, Manoa

      College of Engineering, Department of Civil and Environmental Engineering
      2540 Dole Street, Holmes Hall 383
      Honolulu, HI  United States  96822
    • Principal Investigators:

      Robertson, Ian

    • Start Date: 20040601
    • Expected Completion Date: 0
    • Actual Completion Date: 20090531
    • Source Data: RiP Project 12786

    Subject/Index Terms

    Filing Info

    • Accession Number: 01460462
    • Record Type: Research project
    • Source Agency: Hawaii Department of Transportation
    • Contract Numbers: 51397, HWY-L-2003-03
    • Files: RiP, USDOT, STATEDOT
    • Created Date: Jan 3 2013 1:25PM