Loading...
Please wait, while we are loading the content...
Numerical Simulation of Non-Uniformly Distributed Corrosion in Reinforced Concrete Cross-Section
| Content Provider | MDPI |
|---|---|
| Author | German, Magdalena Pamin, Jerzy |
| Copyright Year | 2021 |
| Description | 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. |
| Starting Page | 3975 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma14143975 |
| Journal | Materials |
| Issue Number | 14 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-07-16 |
| Access Restriction | Open |
| Subject Keyword | Materials Reinforced Concrete Corrosion of Reinforcement Chloride Concentration Numerical Simulation |
| Content Type | Text |
| Resource Type | Article |
