Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements
The structural systems of residential buildings in many developed countries have widely utilized reinforced concrete as the most common solution in construction systems since the early 20th century. The durability of reinforced concrete columns and beams is compromised, in most cases, by pathologies...
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| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/17/1/101 |
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| author | Javier Sánchez Montero Pascual Saura Gómez Julio Emilio Torres Martín Servando Chinchón-Payá Nuria Rebolledo Ramos |
| author_facet | Javier Sánchez Montero Pascual Saura Gómez Julio Emilio Torres Martín Servando Chinchón-Payá Nuria Rebolledo Ramos |
| author_sort | Javier Sánchez Montero |
| collection | DOAJ |
| description | The structural systems of residential buildings in many developed countries have widely utilized reinforced concrete as the most common solution in construction systems since the early 20th century. The durability of reinforced concrete columns and beams is compromised, in most cases, by pathologies caused by the corrosion of their reinforcements. This study analyses the corrosion processes induced by carbonation in 25 buildings with reinforced concrete structures. The models estimate the service life of reinforced concrete elements by differentiating between the initiation period and the propagation period of damage, considering two possible stages: the time of corrosion propagation until the cracking of the concrete cover, and the time of propagation until a loss of section is considered unacceptable for structural safety. However, the mathematical expressions that model the propagation periods consider the same corrosion rate in both cases. This research has found that the average corrosion rate in elements with an unacceptable loss of reinforcement section was in the order of 8 times higher than the corrosion rate in cracked columns and beams without a loss of reinforcement. This opens up a path to improve the definition of the different stages experienced by a reinforced concrete element suffering corrosion of its reinforcements due to carbonation, because once the concrete has cracked, the corrosion rate increases significantly. |
| first_indexed | 2024-03-08T15:03:40Z |
| format | Article |
| id | doaj.art-b64a7a6b451b47e7a20ca4d4d32846ad |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T15:03:40Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-b64a7a6b451b47e7a20ca4d4d32846ad2024-01-10T15:02:36ZengMDPI AGMaterials1996-19442023-12-0117110110.3390/ma17010101Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete ElementsJavier Sánchez Montero0Pascual Saura Gómez1Julio Emilio Torres Martín2Servando Chinchón-Payá3Nuria Rebolledo Ramos4Instituto Eduardo Torroja de Ciencias de la Construcción (IETcc-CSIC), Calle de Serrano Galvache, 4, 28033 Madrid, SpainDepartamento de Construcciones Arquitectónicas, Universidad de Alicante, 03690 San Vicente del Raspeig, Alicante, SpainInstituto Eduardo Torroja de Ciencias de la Construcción (IETcc-CSIC), Calle de Serrano Galvache, 4, 28033 Madrid, SpainInstituto Eduardo Torroja de Ciencias de la Construcción (IETcc-CSIC), Calle de Serrano Galvache, 4, 28033 Madrid, SpainInstituto Eduardo Torroja de Ciencias de la Construcción (IETcc-CSIC), Calle de Serrano Galvache, 4, 28033 Madrid, SpainThe structural systems of residential buildings in many developed countries have widely utilized reinforced concrete as the most common solution in construction systems since the early 20th century. The durability of reinforced concrete columns and beams is compromised, in most cases, by pathologies caused by the corrosion of their reinforcements. This study analyses the corrosion processes induced by carbonation in 25 buildings with reinforced concrete structures. The models estimate the service life of reinforced concrete elements by differentiating between the initiation period and the propagation period of damage, considering two possible stages: the time of corrosion propagation until the cracking of the concrete cover, and the time of propagation until a loss of section is considered unacceptable for structural safety. However, the mathematical expressions that model the propagation periods consider the same corrosion rate in both cases. This research has found that the average corrosion rate in elements with an unacceptable loss of reinforcement section was in the order of 8 times higher than the corrosion rate in cracked columns and beams without a loss of reinforcement. This opens up a path to improve the definition of the different stages experienced by a reinforced concrete element suffering corrosion of its reinforcements due to carbonation, because once the concrete has cracked, the corrosion rate increases significantly.https://www.mdpi.com/1996-1944/17/1/101corrosioncarbonationserviceability limit stateultimate limit stateservice life |
| spellingShingle | Javier Sánchez Montero Pascual Saura Gómez Julio Emilio Torres Martín Servando Chinchón-Payá Nuria Rebolledo Ramos Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements Materials corrosion carbonation serviceability limit state ultimate limit state service life |
| title | Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements |
| title_full | Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements |
| title_fullStr | Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements |
| title_full_unstemmed | Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements |
| title_short | Variation of Corrosion Rate, V<sub>corr</sub>, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements |
| title_sort | variation of corrosion rate v sub corr sub during the carbonation induced corrosion propagation period in reinforced concrete elements |
| topic | corrosion carbonation serviceability limit state ultimate limit state service life |
| url | https://www.mdpi.com/1996-1944/17/1/101 |
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