Developing High-Performance Nanocomposite Coating for Steel Reinforcement Protection in Chloride-Rich Concrete

Anti-corrosion coating is one of the most widely used technologies to mitigate corrosion of steel reinforcement in chloride-contaminated concrete. The durability of epoxy-coated reinforcement commonly used is of great concern due to its failure record in high chloride environments and localized corrosion conditions. In this context, this project aims to design a long-lasting, high-performance rebar coating that increases the service life of the rebar in concrete by reducing corrosion at the interface between the rebar and the surrounding chloride-contaminated concrete. A two-layer coating will be applied on steel rebar, with an inhibitor-loaded epoxy nanocomposite coating as the primer and a minerals-loaded epoxy-polyurethane nanocomposite coating as the top coat. Electrochemical corrosion tests, surface analyses, and mechanical tests will be conducted to assess and elucidate the effect of different constituents on the protective performance of such novel epoxy-based nanocomposite coatings.

Language

  • English

Project

  • Status: Active
  • Funding: $180856
  • Contract Numbers:

    69A3551947137

  • Sponsor Organizations:

    Transportation Infrastructure Durability & Life Extension

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

    Office of the Assistant Secretary for Research and Technology

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

    Transportation Infrastructure Durability & Life Extension

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

    Kline, Robin

  • Performing Organizations:

    Washington State University

    PO Box 646210
    Pullman, Washington  United States  99164-6210
  • Principal Investigators:

    Shi, Xianming

  • Start Date: 20210501
  • Expected Completion Date: 20220930
  • Actual Completion Date: 20220630
  • USDOT Program: University Transportation Centers
  • Subprogram: Transportation Infrastructure Durability & Life Etension

Subject/Index Terms

Filing Info

  • Accession Number: 01773715
  • Record Type: Research project
  • Source Agency: National Center for Transportation Infrastructure Durability and Life-Extension
  • Contract Numbers: 69A3551947137
  • Files: UTC, RIP
  • Created Date: Jun 2 2021 1:54PM