Abstract
The service life design of reinforced concrete structures
requires models capable of reliably describing both the
mechanisms of damage and its progression over time. For
concrete exposed to chlorides, service life design
typically disregards the onset of damage, i.e. the
progress of corrosion of the reinforcing steel. Common
service life design practice typically considers the end
of the initiation phase of the degradation process as the
design limit state. A method is proposed where a model
for estimating the time to corrosion initiation is
coupled with a model for estimating the time to corrosion
induced cracking into a single limit state determination.
An example is provided of a structural element that has
been designed for the serviceability limit state of
corrosion induced concrete cover cracking. The results
show that the corrosion rate is a major factor for the
coupled service life determination. Where fast corrosion
is expected, service life extension is insignificant, and
where slow corrosion rates are expected, service life
extension can be significant.
| Original language | English |
|---|---|
| Title of host publication | XXIIIth Symposium on Nordic Concrete Research |
| Subtitle of host publication | Part 2 |
| Publisher | Norsk Betongforening |
| Pages | 115-118 |
| ISBN (Electronic) | 978-82-8208-056-9 |
| Publication status | Published - 2017 |
| MoE publication type | A4 Article in a conference publication |
| Event | XXIII Nordic Concrete Research Symposium - Aalborg, Denmark Duration: 21 Aug 2017 → 23 Aug 2017 |
Publication series
| Series | Nordic Concrete Research |
|---|---|
| ISSN | 0800-6377 |
Conference
| Conference | XXIII Nordic Concrete Research Symposium |
|---|---|
| Country | Denmark |
| City | Aalborg |
| Period | 21/08/17 → 23/08/17 |
Keywords
- service life
- limit state
- design
- modelling
- deterioration
- concrete cover
- chloride ingress
- corrosion
- cracking
- serviceability
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Cite this
Bohner, E., & Ferreira, M. (2017). Extending service life by coupling the limit state of corrosion initiation and corrosion induced cracking. In XXIIIth Symposium on Nordic Concrete Research : Part 2 (pp. 115-118). Norsk Betongforening. Nordic Concrete Research https://nordicconcrete.net/wp-content/uploads/2017/08/XXIII-NCR-Symposium-DEL-2-A4-A6-proceedings.pdf