Numerical simulation of non-uniformly distributed corrosion in reinforced concrete cross-section
Authors:
- Magdalena German,
- Jerzy Pamin
Abstract
Reinforced concrete structures can be strongly damaged by chloride corrosion of reinforcement. Rust accumulated around rebars involves a volumetric expansion, causing cracking of the surrounding concrete. To simulate the corrosion progress, the initiation phase of the corrosion process is first examined, taking into account the phenomena of oxygen and chloride transport as well as the corrosion current flow. This makes it possible to estimate the mass of produced rust, whereby a corrosion level is defined. A combination of three numerical methods is used to solve the coupled problem. The example object of the research is a beam cross-section with four reinforcement bars. The proposed methodology allows one to predict evolving chloride concentration and time to reinforcement depassivation, depending on the reinforcement position and on the location of a point on the bar surface. Moreover, the dependence of the corrosion initiation time on the chloride diffusion coefficient, chloride threshold, and reinforcement cover thickness is examined.
- Record ID
- CUTdf3d90f24a3447c3bce46a8c2b681a41
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2021
- Vol
- 14
- No
- 14
- Pages
- [1-20]
- Article number
- 3975
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 19-20; Bibliografia (liczba pozycji) - 49; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 14, Spec. Iss.
- Substantive notes
- Special Issue: Advanced Construction Materials and Processes in Poland
- Keywords in English
- reinforced concrete, corrosion of reinforcement, chloride concentration, numerical simulation
- DOI
- DOI:10.3390/ma14143975 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/14/14/3975 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTdf3d90f24a3447c3bce46a8c2b681a41/
- URN
urn:pkr-prod:CUTdf3d90f24a3447c3bce46a8c2b681a41
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.