Corrosion Durability of Reinforced Concrete Utilizing UHPC for ABC Applications

Ultra-high performance concrete (UHPC) is increasingly used in novel accelerated bridge construction (ABC) designs including bridge deck joints and concrete substructure applications. While it is generally accepted that bulk UHPC can provide enhanced corrosion durability due to its low permeability, many ABC applications of the material incorporate designs where reinforcing steel is embedded in both conventional concrete and UHPC. In these conditions, the dissimilar concrete environments may lead to enhanced corrosion conditions. Among the various material effects on long-term corrosion durability of reinforced concrete, material properties and characteristics such as electrical resistivity, internal moisture availability, oxygen diffusivity, and chloride diffusivity can enhance or mitigate corrosion development. Material considerations of the design such as physical bond and moisture and chemical transport at cold joints of conventional and UHPC can be important. Furthermore, electro-chemical considerations such as macro-cell coupling of steel electrodes, cathodic oxygen reduction efficiency of steel, and critical chloride threshold concentrations for steel should be addressed for ABC designs incorporating conventional and UHPC concretes.

• Record URL:
  https://abc-utc.fiu.edu/research-projects/fiu-research-projects/corrosion-durability-reinforced-concrete-utilizing-uhpc-abc-applications/

Language

• English

Project

• Status: Completed
• Funding: $53457
• Contract Numbers:

  DTRT13-G-UTC41

• Sponsor Organizations:

  Accelerated Bridge Construction University Transportation Center (ABC-UTC)

  Florida International University
  10555 W. Flagler Street
  Miami, FL  United States  33174

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  Accelerated Bridge Construction University Transportation Center (ABC-UTC)

  Florida International University
  10555 W. Flagler Street
  Miami, FL  United States  33174

  Department of Transportation

  Office of the Secretary
  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Project Managers:

  Azizinamini, Atorod

• Performing Organizations:

  Florida International University

  10555 West Flagler Street
  Miami, FL  United States  33174

  Accelerated Bridge Construction University Transportation Center (ABC-UTC)

  Florida International University
  10555 W. Flagler Street
  Miami, FL  United States  33174
• Principal Investigators:

  Lau, Kinglsey

  Azizinamini, Atorod

  Garber, D

• Start Date: 20170601
• Expected Completion Date: 20190531
• Actual Completion Date: 20190531
• USDOT Program: University Transportation Centers

Subject/Index Terms

• TRT Terms: Bridge construction; Corrosion; Durability; Reinforced concrete; Ultra high performance concrete
• Subject Areas: Bridges and other structures; Construction; Materials;

Filing Info

• Accession Number: 01711272
• Record Type: Research project
• Source Agency: Accelerated Bridge Construction University Transportation Center (ABC-UTC)
• Contract Numbers: DTRT13-G-UTC41
• Files: UTC, RIP
• Created Date: Jul 18 2019 2:29PM