Abstract
Using a newly developed multi-physics transport, corrosion, and cracking model, which models these phenomena as a coupled physiochemical processes, the role of HPFRCC crack control and formation in regulating steel reinforcement corrosion is investigated. This model describes transport of water and chemical species, the electric potential distribution in the HPFRCC, the electrochemical propagation of steel corrosion, and the role of microcracks in the HPFRCC material. Numerical results show that the reduction in anode and cathode size on the reinforcing steel surface, due to multiple crack formation and widespread depassivation, are the mechanism behind experimental results of HPFRCC steel corrosion studies found in the literature. Such results provide an indication of the fundamental mechanisms by which steel reinforced HPFRCC materials may be more durable than traditional reinforced concrete and other tension-softening cementitious composites. Finally, these results are extended to provide greater insight into the assessment and design of more sustainable steel reinforced HPFRCC structures.
| Original language | English |
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| Title of host publication | Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures |
| Number of pages | 12 |
| Publication date | 2016 |
| Publication status | Published - 2016 |
| Event | 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures - University of California, Berkeley, Berkeley, CA, United States Duration: 29 May 2016 → 1 Jun 2016 Conference number: 9 |
Conference
| Conference | 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures |
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| Number | 9 |
| Location | University of California, Berkeley |
| Country/Territory | United States |
| City | Berkeley, CA |
| Period | 29/05/2016 → 01/06/2016 |