About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cutting-Edge Characterization and Electrochemical Techniques for Unraveling Corrosion Phenomena
|
| Presentation Title |
Characterizing the mechanisms controlling localized corrosion of steel in concrete |
| Author(s) |
Christopher Alexander, Prakirti Singh |
| On-Site Speaker (Planned) |
Christopher Alexander |
| Abstract Scope |
This work aims to uncover the mechanisms controlling pit growth of steel in concrete by utilizing a combination of experiments and physics-based computational models to explore the possible conditions under which repassivation may occur in concrete. Artificial pit experiments are used in combination with multiphysics models to study the influence of concrete configuration on pit stability and repassivation. The steel and concrete interface is highly complex and heterogenous. The ability of the concrete to act as a diffusion barrier and as a pH buffer are expected to be the two primary influences on pitting corrosion. One is expected to promote stable pit growth whereas the other is expected to promote repassivation. Additionally, the formation of corrosion products and their ability to support cathodic activity is expected to greatly impact pit shape evolution and potentially the evolution from localized to more general forms of corrosion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Iron and Steel, Other |