Durability assessment of reinforced concrete structures due to chloride ingress up and beyond induction period
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00313765" target="_blank" >RIV/68407700:21110/17:00313765 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Durability assessment of reinforced concrete structures due to chloride ingress up and beyond induction period
Original language description
Chloride ingress in reinforced concrete structures is the main cause for the corrosion of reinforcing steel. This paper presents a new chemo-mechanical model up and beyond induction period, taking into account concrete mix design, supplementary cementitious materials, concrete cover, effect of cracking, and environmental conditions. 1D model for chloride ingress from Kwon is extended for crack effects, which accelerates chloride ingress. Fracture–plastic constitutive model is used for the modelling of externally induced cracks. The influence of cracks is enormous, e.g. crack width 0.3 mm decreases the induction time approximately five times when compared to intact concrete. Once the end of induction period is reached, progressive corrosion stage takes place. The corrosion current density i corr is used for calculating the time of concrete spalling for chlorides. After concrete spalling, reinforcement is subjected to corrosion without any protection. The models are validated using two practical cases; Nougawa bridge from Japan and a strut of a concrete bridge from the Czech Republic.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
<a href="/en/project/TA04031458" target="_blank" >TA04031458: Software for prediction and modelling of durability and safety of transportation structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
39th IABSE Symposium
ISBN
978-3-85748-153-6
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
2488-2495
Publisher name
IABSE c/o ETH Hönggerberg
Place of publication
Zürich
Event location
Vancouver
Event date
Sep 19, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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