Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance Spectroscopy
The present work analyzes the behavior in terms of corrosion resistance of three reinforced concrete formulations over a period of 1 year. The samples were subject to a monitoring methodology using the Electrochemical Impedance Spectroscopy (EIE) technique, working only with the real component over...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Construction Materials |
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| Online Access: | https://www.mdpi.com/2673-7108/4/1/11 |
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| author | Anilé Ossorio Domínguez Romildo Dias Toledo Filho José Antônio da Cunha Ponciano Gomes Ralph dos Santos Silva Eduardo Alencar de Souza Adriana Barbosa da Silva |
| author_facet | Anilé Ossorio Domínguez Romildo Dias Toledo Filho José Antônio da Cunha Ponciano Gomes Ralph dos Santos Silva Eduardo Alencar de Souza Adriana Barbosa da Silva |
| author_sort | Anilé Ossorio Domínguez |
| collection | DOAJ |
| description | The present work analyzes the behavior in terms of corrosion resistance of three reinforced concrete formulations over a period of 1 year. The samples were subject to a monitoring methodology using the Electrochemical Impedance Spectroscopy (EIE) technique, working only with the real component over time. Three mixtures were used, one conventional without pozzolanic addition (REF) and two others with pozzolanic additions, rice husk ash (RHA) and metakaolin (MK). Prototypes were created and exposed to the action of a 165 g/L NaCl sodium chloride solution. The characterization of the materials was carried out by determining the chloride diffusion profile (ASTM 1556), analyzing images using tomography and with the support of analytical techniques such as X-ray fluorescence and X-ray diffraction. The monitoring methodology using EIE demonstrated the positive effect of the insertion of pozzolans, rice husk ash (RHA) and metakaolin (MK) in delaying the process of chloride diffusion in the concrete, resulting in greater resistance to corrosion. The EIE also showed that the active mineral addition in concrete, resulting in aluminum-silicic composition (MK), had a predominant protective effect on the steel/concrete interface against the attack of chloride ions. |
| first_indexed | 2024-04-24T18:24:27Z |
| format | Article |
| id | doaj.art-45fc7159152445d4894be33f764c354e |
| institution | Directory Open Access Journal |
| issn | 2673-7108 |
| language | English |
| last_indexed | 2024-04-24T18:24:27Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Construction Materials |
| spelling | doaj.art-45fc7159152445d4894be33f764c354e2024-03-27T13:32:14ZengMDPI AGConstruction Materials2673-71082024-02-014119421510.3390/constrmater4010011Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance SpectroscopyAnilé Ossorio Domínguez0Romildo Dias Toledo Filho1José Antônio da Cunha Ponciano Gomes2Ralph dos Santos Silva3Eduardo Alencar de Souza4Adriana Barbosa da Silva5Lab NUMATS, Department of Civil Engineering, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, BrazilLab NUMATS, Department of Civil Engineering, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, BrazilLabcorr, Department of Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, BrazilLab DME, Department of Mathematic, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, BrazilLabcorr, Department of Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, BrazilLabcorr, Department of Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, BrazilThe present work analyzes the behavior in terms of corrosion resistance of three reinforced concrete formulations over a period of 1 year. The samples were subject to a monitoring methodology using the Electrochemical Impedance Spectroscopy (EIE) technique, working only with the real component over time. Three mixtures were used, one conventional without pozzolanic addition (REF) and two others with pozzolanic additions, rice husk ash (RHA) and metakaolin (MK). Prototypes were created and exposed to the action of a 165 g/L NaCl sodium chloride solution. The characterization of the materials was carried out by determining the chloride diffusion profile (ASTM 1556), analyzing images using tomography and with the support of analytical techniques such as X-ray fluorescence and X-ray diffraction. The monitoring methodology using EIE demonstrated the positive effect of the insertion of pozzolans, rice husk ash (RHA) and metakaolin (MK) in delaying the process of chloride diffusion in the concrete, resulting in greater resistance to corrosion. The EIE also showed that the active mineral addition in concrete, resulting in aluminum-silicic composition (MK), had a predominant protective effect on the steel/concrete interface against the attack of chloride ions.https://www.mdpi.com/2673-7108/4/1/11reinforced concretecorrosionchloridespozzolan |
| spellingShingle | Anilé Ossorio Domínguez Romildo Dias Toledo Filho José Antônio da Cunha Ponciano Gomes Ralph dos Santos Silva Eduardo Alencar de Souza Adriana Barbosa da Silva Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance Spectroscopy Construction Materials reinforced concrete corrosion chlorides pozzolan |
| title | Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance Spectroscopy |
| title_full | Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance Spectroscopy |
| title_fullStr | Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance Spectroscopy |
| title_full_unstemmed | Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance Spectroscopy |
| title_short | Study of Reinforced Concrete with the Addition of Pozzolanic against the Penetration of Chlorides through Electrochemical Impedance Spectroscopy |
| title_sort | study of reinforced concrete with the addition of pozzolanic against the penetration of chlorides through electrochemical impedance spectroscopy |
| topic | reinforced concrete corrosion chlorides pozzolan |
| url | https://www.mdpi.com/2673-7108/4/1/11 |
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