Corrosion propagation monitoring legacy samples and forensic analysis on selected samples.

In the past, most studies trying to understand corrosion of reinforcing steel, due to project duration limitations: usually terminate the tests shortly after corrosion initiates. In opposition thereto, some studies have been carried out to better understand the amount of corrosion products that cause cracks (typically in concrete with no supplementary cementitious materials), used methodologies to accelerate corrosion of the reinforcing steel. But, corrosion products built up from accelerated approaches might deviate significantly from the built up that take place under natural corroding (or moderately accelerated) cases. Legacy samples exposed outdoors for 27 years and indoor samples prepared in 2016 (binary and ternary concrete mixes) will be used to investigate corrosion propagation. For outdoor samples, it is known that a number of rebars are corroding and several samples now display cracks. Similarly, the rebar of several indoor samples are corroding. Monitoring the propagation stage for a long period of time is relevant. TriDurLE Year 1 funded the monitoring of legacy samples. Year 2 will allow to continue monitoring and to assess corrosion extent on selected samples that will be terminated (forensic analysis). If possible, the chloride concentration at the rebar depth will be determined on terminated samples. In addition, the steel bars will be cleaned and the corrosion morphology examined. The maximum corrosion pit depth will be measured and the cross sectional loss of steel bars will also be estimated.

• Record URL:
  https://tridurle.wsu.edu/corrosion-propagation-monitoring/

Language

• English

Project

• Status: Active
• Funding: $98,075
• 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: 20210901
• Expected Completion Date: 20230228
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers
• Subprogram: Transportation Infrastructure Durability and Life Extension

Subject/Index Terms

• TRT Terms: Corrosion; Reinforcing bars; Reinforcing steel; Test procedures
• Subject Areas: Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01779156
• Record Type: Research project
• Source Agency: National Center for Transportation Infrastructure Durability and Life-Extension
• Contract Numbers: 69A3551947137
• Files: UTC, RIP
• Created Date: Aug 17 2021 5:16PM