Self-healing microcapsules as concrete aggregates for corrosion inhibition in reinforced concrete

Reinforced Concrete (RC) structures are vital to the US’s infrastructure due to their high durability and superior mechanic performance when used as prime materials for bridges, superstructures and other civil engineering applications. Unfortunately, RC elements deteriorate rapidly when exposed to aggressive or corrosive environments. The use of self-healing corrosion inhibiting solutions provides a technology capable of influencing surface properties and indirectly the transport properties, the rebar corrosion rate, and the mechanism of reaction at the steel/concrete interface. Single or double walled self-healing microcapsules are materials that can be used to control and mitigate damage evolution processes in electrochemical systems such as reinforced concrete systems. The capsules house an anodic or cathodic corrosion inhibitor agent such as calcium nitrate. The advantage of these microcapsules is that they can be added during the mixing process or following the drying process in concrete structures and work on preventing corrosion with no need for maintenance or repair. This work aims to characterize and develop microcapsules formed through the concrete mixing process. The integration of such materials will enhance the durability and extend the useful life by controlling the corrosion precursors and the corrosion process during the damage evolution process.

• Supplemental Notes:
  • 17CLSU08

Language

• English

Project

• Status: Completed
• Funding: $212968
• Contract Numbers:

  69A3551747106

• 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:

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590

  Transportation Consortium of South-Central States (Tran-SET)

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

  Hassan, Marwa

  Karaman, Ibrahim

• Performing Organizations:

  Louisiana State University and A&M College

  202 Himes Hall
  Baton Rouge, LA  United States  70803

  Texas A&M Transportation Institute, College Station

  Texas A&M University System
  3135 TAMU
  College Station, TX  United States  77843-3135

  Louisiana Transportation Research Center

  4101 Gourrier Avenue
  Baton Rouge, LA  United States  70808
• Principal Investigators:

  Castaneda, Homero

  Hassan, Marwa

  Radovic, Miladin

• Start Date: 20170508
• Expected Completion Date: 20181108
• Actual Completion Date: 20181108
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Corrosion protection; Corrosion resistant materials; Durability; Reinforced concrete; Service life
• Subject Areas: Bridges and other structures; Environment; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01634812
• Record Type: Research project
• Source Agency: Transportation Consortium of South-Central States (Tran-SET)
• Contract Numbers: 69A3551747106
• Files: UTC, RIP
• Created Date: May 14 2017 10:37AM