Current State of Simulated Deck Samples Cast with Corrosion Resistant Alloys (>16 years)

The proposed research will assess the current state of corrosion resistant alloy (CRA) rebars embedded in concrete after prolonged outdoor exposure. Samples were prepared with several types of CRAs. The sample geometry is known as simulated deck slabs. Several sets of samples were prepared between 2003 and 2006. The SDS samples were exposed to 15% by wt NaCl solution for at least 10 years (1 week wet and 1 week dry). The samples that remain have higher grade CRA rebars. After that the samples continued to be exposed outdoors but the NaCl solution was not refreshed as frequently and during the last five years no additional NaCl solution has been added. The solution reservoirs on many samples have deteriorated and there is no longer a top on most of them. Chlorides from ocean spray deposit onto the top of the sample that modestly add to those already on the sample. Besides the outdoors samples, there are two SDS samples exposed indoors that were prepared with a duplex stainless steel in 2008 and these samples were subjected to accelerated chloride transport. Electrochemical tests and rebar potential will be measured periodically on selected samples. At least five samples will be forensically analyzed. Besides characterizing the rebar surface conditions, the chloride concentration above the rebar trace will be measured.

• Record URL:
  https://tridurle.wsu.edu/current-state-of-simulated-deck-samples-cast-with-corrosion-resistant-alloys-16-years/

Language

• English

Project

• Status: Active
• Funding: $97878
• Contract Numbers:

  69A3551947137

• Sponsor Organizations:

  Transportation Infrastructure Durability & Life Extension

  Washington State University
  Civil & Environmental Engineering
  Pullman, Washington  United States  99164

  Florida Atlantic University Dept. of Ocean & Mechanical engineering

  101 North Beach Road
  Dania Beach, Florida  United States  33004
• Managing Organizations:

  Transportation Infrastructure Durability & Life Extension

  Washington State University
  Civil & Environmental Engineering
  Pullman, Washington  United States  99164
• Project Managers:

  Kline, Robin

• Performing Organizations:

  Florida Atlantic University Dept. of Ocean & Mechanical engineering

  101 North Beach Road
  Dania Beach, Florida  United States  33004
• Principal Investigators:

  Presuel-Moreno, Francisco

• Start Date: 20221001
• Expected Completion Date: 20220930
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers
• Subprogram: Transportation Infrastructure Durability and Life Extension

Subject/Index Terms

• TRT Terms: Bridge decks; Concrete pavements; Corrosion resistant alloys; Deterioration by environmental action; Seawater; Sodium chloride; State of the practice
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01857863
• Record Type: Research project
• Source Agency: National Center for Transportation Infrastructure Durability and Life-Extension
• Contract Numbers: 69A3551947137
• Files: UTC, RIP
• Created Date: Sep 16 2022 11:28AM