Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete Structures
This paper presents an application of the Boundary Element Method (BEM) in engineering to simulate and numerically analyze the process of accumulation of chloride ions in a reinforced concrete structure. The study begins with a brief review of the origin of reinforced concrete and the phenomenon of...
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| Format: | Article |
| Language: | English |
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K. N. Toosi University of Technology
2024-12-01
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| Series: | Numerical Methods in Civil Engineering |
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| Online Access: | https://nmce.kntu.ac.ir/article_210379_bdba87a5a04a3895aef2c00f7603bd89.pdf |
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| author | Roberto Pettres Ahiram Roquitski Rafael Rocha |
| author_facet | Roberto Pettres Ahiram Roquitski Rafael Rocha |
| author_sort | Roberto Pettres |
| collection | DOAJ |
| description | This paper presents an application of the Boundary Element Method (BEM) in engineering to simulate and numerically analyze the process of accumulation of chloride ions in a reinforced concrete structure. The study begins with a brief review of the origin of reinforced concrete and the phenomenon of depassivation of reinforcement. The geometric and mathematical model considers two types of concrete characteristics, seeking to numerically represent the concrete used in the construction of beams and pillars of buildings and bridges, covered with an external layer and/or surface protection. In the simulations, it was possible to record the concentration of chlorides in the position occupied by a steel rod in the reinforcement, calculating the number of years necessary to cause the steel to depassivate. In addition to concrete, two materials with different diffusivities were used for the coating layer and two values for its thickness, both related to the time required for the start of the reinforcement corrosion process. The results were obtained with a correlation level of 0.99954 for the R2 estimator, presented in the formulation validation section 4.1, allowing to obtain important information about the steel depassivation process with and without the use of surface protection, making it possible to calculate the start time of reinforcement depassivation under different conditions, the details of which are presented below. |
| format | Article |
| id | doaj-art-03c2b358bb6349f3b733797e1881faab |
| institution | Kabale University |
| issn | 2345-4296 2783-3941 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | K. N. Toosi University of Technology |
| record_format | Article |
| series | Numerical Methods in Civil Engineering |
| spelling | doaj-art-03c2b358bb6349f3b733797e1881faab2025-01-23T08:03:13ZengK. N. Toosi University of TechnologyNumerical Methods in Civil Engineering2345-42962783-39412024-12-019211610.61186/NMCE.2405.1059210379Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete StructuresRoberto Pettres0Ahiram Roquitski1Rafael Rocha2UFPR – Federal University of Paraná, Postgraduate Program in Numerical Methods in Engineering, Department of Mathematics, Curitiba, Paraná, BrazilUFPR – Federal University of Paraná, Department of Statistics. Curitiba, Paraná, BrazilUFSC – Federal University of Santa Catarina, Joinville, Santa Catarina, BrazilThis paper presents an application of the Boundary Element Method (BEM) in engineering to simulate and numerically analyze the process of accumulation of chloride ions in a reinforced concrete structure. The study begins with a brief review of the origin of reinforced concrete and the phenomenon of depassivation of reinforcement. The geometric and mathematical model considers two types of concrete characteristics, seeking to numerically represent the concrete used in the construction of beams and pillars of buildings and bridges, covered with an external layer and/or surface protection. In the simulations, it was possible to record the concentration of chlorides in the position occupied by a steel rod in the reinforcement, calculating the number of years necessary to cause the steel to depassivate. In addition to concrete, two materials with different diffusivities were used for the coating layer and two values for its thickness, both related to the time required for the start of the reinforcement corrosion process. The results were obtained with a correlation level of 0.99954 for the R2 estimator, presented in the formulation validation section 4.1, allowing to obtain important information about the steel depassivation process with and without the use of surface protection, making it possible to calculate the start time of reinforcement depassivation under different conditions, the details of which are presented below.https://nmce.kntu.ac.ir/article_210379_bdba87a5a04a3895aef2c00f7603bd89.pdfdepassivation of steel reinforcementstart of corrosioncoating to retard corrosiondiffusion equation for chlorideboundary element method |
| spellingShingle | Roberto Pettres Ahiram Roquitski Rafael Rocha Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete Structures Numerical Methods in Civil Engineering depassivation of steel reinforcement start of corrosion coating to retard corrosion diffusion equation for chloride boundary element method |
| title | Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete Structures |
| title_full | Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete Structures |
| title_fullStr | Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete Structures |
| title_full_unstemmed | Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete Structures |
| title_short | Numercial Analysis Of Steel Depassivation By The Action Of Chloride Ions In Reinforced Concrete Structures |
| title_sort | numercial analysis of steel depassivation by the action of chloride ions in reinforced concrete structures |
| topic | depassivation of steel reinforcement start of corrosion coating to retard corrosion diffusion equation for chloride boundary element method |
| url | https://nmce.kntu.ac.ir/article_210379_bdba87a5a04a3895aef2c00f7603bd89.pdf |
| work_keys_str_mv | AT robertopettres numercialanalysisofsteeldepassivationbytheactionofchlorideionsinreinforcedconcretestructures AT ahiramroquitski numercialanalysisofsteeldepassivationbytheactionofchlorideionsinreinforcedconcretestructures AT rafaelrocha numercialanalysisofsteeldepassivationbytheactionofchlorideionsinreinforcedconcretestructures |