Development of Corrosion Inhibiting Geopolymers based Cement for Transportation Infrastructure

Geopolymers are gaining attention as affordable, sustainable, and eco-friendly replacement for Ordinary Portland Cement (OPC) in concrete civil structures. More importantly, Geopolymer-based Cement (GPC) provide sustainable and environmentally friendly alternative to OPCs as GPC can be processed at room temperatures from aqueous solutions of waste materials (e.g. fly ash) or abounded natural sources (e.g. clay) and thus reduce significant CO2 production. Although, research has been done on improving mechanical properties of GPC, there are only a few studies on the effects of GPC concrete on steel rebar reinforcement. This study will investigate the long-term durability of reinforced GPC concrete against chloride-induced corrosion. Durability tests under simulated marine environment will be conducted on reinforced GPC concrete over long periods of time. Both material characterization studies related to micro to macro behavioral changes during long-term exposure of reinforced GPC concrete and steel rebar will also be carried out. In addition, in order to improve the durability of the transportation infrastructure affected by corrosion in the most efficient manner, a procedure to manage corrosion in reinforced GPC bridges will be developed. The desirable features of this management system will include the methods for preliminary corrosion condition evaluation and in-depth corrosion condition evaluation, the methods for assessing the structure condition rating and monitoring, methodology for selecting best corrosion prevention and controls, reliability model, and procedure for tracking repair or design performance.

Language

  • English

Project

  • Status: Active
  • Funding: $120000
  • Contract Numbers:

    19CTAM02

  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

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

    Transportation Consortium of South-Central States

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

    Melson, Christopher

  • Performing Organizations:

    Texas A&M University, College Station

    318 Jack K. Williams Administration Building
    College Station, TX  United States  77843
  • Principal Investigators:

    Castaneda, Homero

    Radovic, Miladin

  • Start Date: 20190815
  • Expected Completion Date: 20210430
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers Program

Subject/Index Terms

Filing Info

  • Accession Number: 01713238
  • Record Type: Research project
  • Source Agency: Transportation Consortium of South-Central States
  • Contract Numbers: 19CTAM02
  • Files: UTC, RiP
  • Created Date: Aug 6 2019 11:50AM