Abstract
| Original language | English |
|---|---|
| Title of host publication | XXIIIth Symposium on Nordic Concrete Research |
| Publisher | Norsk Betongforening |
| Pages | 115-118 |
| 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 |
Conference
| Conference | XXIII Nordic Concrete Research Symposium |
|---|---|
| Country | Denmark |
| City | Aalborg |
| Period | 21/08/17 → 23/08/17 |
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Keywords
- service life
- limit state
- design
- modelling
- deterioration
- concrete cover
- chloride ingress
- corrosion
- cracking
- serviceability
Cite this
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Extending service life by coupling the limit state of corrosion initiation and corrosion induced cracking. / Bohner, Edgar; Ferreira, Miguel.
XXIIIth Symposium on Nordic Concrete Research . Norsk Betongforening, 2017. p. 115-118.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - Extending service life by coupling the limit state of corrosion initiation and corrosion induced cracking
AU - Bohner, Edgar
AU - Ferreira, Miguel
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - service life
KW - limit state
KW - design
KW - modelling
KW - deterioration
KW - concrete cover
KW - chloride ingress
KW - corrosion
KW - cracking
KW - serviceability
M3 - Conference article in proceedings
SP - 115
EP - 118
BT - XXIIIth Symposium on Nordic Concrete Research
PB - Norsk Betongforening
ER -