Initial Characterization of Geopolymer Based UHPC Material Properties

Ultra-high performance concrete (UHPC) has been attracting more and more interest in the bridge engineering community over the past decade due to its excellent strength, ductility, and durability. However, the high material costs associated with UHPC have prevented it from completely replacing more conventional concrete mix designs. Recently, a Chinese research team successfully developed a unique and innovative but low-cost geopolymer-based UHPC formula design: G-UHPC. In this formula, geopolymer composites are used to replace the cement found in traditional UHPC. By using geopolymer materials, it is not only cost effective but also environmentally friendly. G-UHPC was originally developed for applications in protective structures, and research conducted so far has mainly focused on its blast-resistant properties. In the proposed research, more complete material tests following the American Society for Testing and Materials (ASTM_ International and/or American Association of State Highway and Transportation Officials (AASHTO) standards are to more fully evaluate the material properties. Specifically, the compression, tension, bending strength, and modulus of elasticity will be tested as well as permeability, bond strength, and followability. After the material properties are evaluated with code-based laboratory tests, a bridge concept that makes economical use of the unique characteristics of the material will be developed. It is anticipated that after successful evaluation of the important material properties, the cost-effective and environmentally-friendly G-UHPC may be a very attractive option for future bridge construction and repair. If successful, this work will reduce overall bridge life-cycle costs by both taking advantage of its higher strength and very low (close to zero) permeability, which could essentially eliminate deterioration. Reducing cost is essential for maintaining a state of good repair when budgets are severely limited. It is also expected that the success of this project would lead to a series of future collaborative research and funding opportunities through federal, state, and local agencies and academia organizations both nationally and internationally.

Language

  • English

Project

  • Status: Active
  • Funding: $45000
  • Contract Numbers:

    DTRT13-G-UTC37

  • Sponsor Organizations:

    Midwest Transportation Center

    Iowa State University
    2711 S Loop Drive, Suite 4700
    Ames, IA  United States  50010-8664

    Iowa Highway Research Board

    Iowa Department of Transportation
    800 Lincoln Way
    Ames, IA  United States  50010

    Iowa Department of Transportation

    800 Lincoln Way
    Ames, IA  United States  50010

    Office of the Assistant Secretary for Research and Technology

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

    Midwest Transportation Center

    Iowa State University
    2711 S Loop Drive, Suite 4700
    Ames, IA  United States  50010-8664
  • Performing Organizations:

    Iowa State University

    Bridge Engineering Center
    2711 South Loop Drive, Suite 4700
    Ames, Iowa  United States  50010-8664
  • Principal Investigators:

    Lu, Ping

  • Start Date: 20170301
  • Expected Completion Date: 20180228
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01632693
  • Record Type: Research project
  • Source Agency: Midwest Transportation Center
  • Contract Numbers: DTRT13-G-UTC37
  • Files: UTC, RiP
  • Created Date: Apr 26 2017 9:07AM