Toward Corrosion-Free and Highly Sustainable Structural Members by Using Emerging Ultra-High-Performance Materials for Transportation Infrastructure

The proposed research aims to develop next-generation highly corrosion-resistant structural members by utilizing the high durability, compressive ductility, crack resistance and shear strength of ultra-high-performance fiber-reinforced concrete (UHP-FRC). The use of high-strength fiber reinforced polymer (FRP) bars can reduce reinforcement congestion while achieving a high structural efficiency (that is, high flexural strength with a smaller cross-section), as well as eliminate the corrosion concern prevalent in conventional steel reinforced concrete members. The high shear strength of UHP-FRC allows total or substantial elimination of supplemental shear reinforcement. The combination of the very ductile UHP-FRC with the brittle but high-strength FRP bars can provide the corrosion-free characteristics needed for future concrete infrastructure. The primary parameters to be investigated include 1) types of FRP bars (glass fiber, carbon fiber or basalt fiber); 2) fiber types of UHP-FRC: high-strength micro steel fibers and ultra-high-molecular-weight polyethylene fibers), and 3) shear reinforcement (steel, FRP, or none). The primary objective is to develop a design procedure for the new durable structural members through large-scale beam testing. The economics of using the proposed UHP-FRC/FRP members can be justified as follows: 1) The much higher stiffness and strength properties allow lighter, longer, and fewer members to be used. This, in turn, saves construction time and labor cost. 2) UHP-FRC has a high early strength of 10 to 12 ksi after 24 hours. This will allow rapid construction and overall savings in time and costs. 3) Eliminating most shear reinforcement leads to simple design and construction. 4) Lower life-cycle costs will be incurred due to the sustainability and corrosion-resistance capability of UHP-FRC. Thus, savings will accrue due to less initial maintenance and repair and fewer social, environmental, and demolition expenses.

    Language

    • English

    Project

    • Status: Completed
    • Funding: $140000
    • Contract Numbers:

      18STUTA01

    • Sponsor Organizations:

      Department of Transportation

      Intelligent Transportation Systems Joint Program Office
      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590

      Office of the Assistant Secretary for Research and Technology

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

      Department of Transportation

      Intelligent Transportation Systems Joint Program Office
      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590

      Transportation Consortium of South-Central States

      Louisiana State University
      Baton Rouge, LA  United States  70803
    • Project Managers:

      Romanoschi, Stefan

    • Performing Organizations:

      University of Texas, Arlington

      Dept. of Civil Engineering
      Box 19308
      Arlington, TX  United States  76019
    • Principal Investigators:

      Chao, Shih-Ho

    • Start Date: 20180315
    • Expected Completion Date: 20190915
    • Actual Completion Date: 20190915
    • USDOT Program: University Transportation Centers

    Subject/Index Terms

    Filing Info

    • Accession Number: 01664045
    • Record Type: Research project
    • Source Agency: Transportation Consortium of South-Central States
    • Contract Numbers: 18STUTA01
    • Files: UTC, RiP
    • Created Date: Mar 19 2018 10:31PM