Abstract
A mechanical model has been used to evaluate the rebar-concrete debonding length and Crack Mouth Opening Displacement (CMOD) in reinforced concrete. The modelling is based on the theory of the fictitious crack. It is shown that there is a non-trival relationship between the debonding length and the CMOD, indicating that if the debonding length has a significant influence on the risk of corrosion initiation and propagation (as indicated in the literature), then CMOD cannot be used alone as corrosion risk indicator. A limited parametric study has been performed and it has been shown that the shear strength of the interface has a significant influence on the debonding length. The cover layer – on the other hand – has relatively little influence on the debonding lengths.
| Original language | English |
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| Title of host publication | Proceedings of the fib Symposium: Concrete Structures for Sustainable Community |
| Number of pages | 4 |
| Publication date | 2012 |
| Publication status | Published - 2012 |
| Event | fib Symposium: Concrete Structures for Sustainable Community - Royal Institute of Technology (KTH) , Stockholm, Sweden Duration: 11 Jun 2012 → 14 Jun 2012 http://www.fibstockholm2012.se/ |
Conference
| Conference | fib Symposium |
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| Location | Royal Institute of Technology (KTH) |
| Country/Territory | Sweden |
| City | Stockholm |
| Period | 11/06/2012 → 14/06/2012 |
| Internet address |
Keywords
- Theory of the fictitious crack
- Debonding length
- CMOD
- Finite Element Modelling
- Reinforced concrete
- Three-point bending