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Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity

The construction industry has extensively demanded novel green inhibition strategies for the conservation and protection of carbon steel-reinforced concrete structures. For the first time, the effect of Azadirachta indica leaf extract (Neem) as a potential corrosion inhibitor of carbon steel in rein...

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Autores principales: Valdez-Salas, Benjamin, Vazquez-Delgado, Ramiro, Salvador-Carlos, Jorge, Beltran-Partida, Ernesto, Salinas-Martinez, Ricardo, Cheng, Nelson, Curiel-Alvarez, Mario
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8235770/
https://www.ncbi.nlm.nih.gov/pubmed/34208505
http://dx.doi.org/10.3390/ma14123326
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author Valdez-Salas, Benjamin
Vazquez-Delgado, Ramiro
Salvador-Carlos, Jorge
Beltran-Partida, Ernesto
Salinas-Martinez, Ricardo
Cheng, Nelson
Curiel-Alvarez, Mario
author_facet Valdez-Salas, Benjamin
Vazquez-Delgado, Ramiro
Salvador-Carlos, Jorge
Beltran-Partida, Ernesto
Salinas-Martinez, Ricardo
Cheng, Nelson
Curiel-Alvarez, Mario
author_sort Valdez-Salas, Benjamin
collection PubMed
description The construction industry has extensively demanded novel green inhibition strategies for the conservation and protection of carbon steel-reinforced concrete structures. For the first time, the effect of Azadirachta indica leaf extract (Neem) as a potential corrosion inhibitor of carbon steel in reinforced concrete under corrosion in saline simulated media was evaluated. To assess the corrosion inhibition behavior of the Neem natural organic extract, three inorganic commercial inhibitors were tested to compare following the criteria established by Stratful for half-cell potential under a simulated chloride environment. Moreover, the effect of concrete integrity by the Neem treatment was recorded after different temperature conditions, slump, weight alteration, air content, compressive strength, and chloride-ions penetration. The results suggested that the Neem treatments did not alter the concrete integrity and the physicochemical parameters. We reached a promoted long-term corrosion protection of 95% after 182 days of evaluation. Thus far, our current results open up a new promising “green” road to the conservation of carbon steel in reinforced concrete for the construction industry.
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spelling pubmed-82357702021-06-27 Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity Valdez-Salas, Benjamin Vazquez-Delgado, Ramiro Salvador-Carlos, Jorge Beltran-Partida, Ernesto Salinas-Martinez, Ricardo Cheng, Nelson Curiel-Alvarez, Mario Materials (Basel) Article The construction industry has extensively demanded novel green inhibition strategies for the conservation and protection of carbon steel-reinforced concrete structures. For the first time, the effect of Azadirachta indica leaf extract (Neem) as a potential corrosion inhibitor of carbon steel in reinforced concrete under corrosion in saline simulated media was evaluated. To assess the corrosion inhibition behavior of the Neem natural organic extract, three inorganic commercial inhibitors were tested to compare following the criteria established by Stratful for half-cell potential under a simulated chloride environment. Moreover, the effect of concrete integrity by the Neem treatment was recorded after different temperature conditions, slump, weight alteration, air content, compressive strength, and chloride-ions penetration. The results suggested that the Neem treatments did not alter the concrete integrity and the physicochemical parameters. We reached a promoted long-term corrosion protection of 95% after 182 days of evaluation. Thus far, our current results open up a new promising “green” road to the conservation of carbon steel in reinforced concrete for the construction industry. MDPI 2021-06-16 /pmc/articles/PMC8235770/ /pubmed/34208505 http://dx.doi.org/10.3390/ma14123326 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Valdez-Salas, Benjamin
Vazquez-Delgado, Ramiro
Salvador-Carlos, Jorge
Beltran-Partida, Ernesto
Salinas-Martinez, Ricardo
Cheng, Nelson
Curiel-Alvarez, Mario
Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity
title Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity
title_full Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity
title_fullStr Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity
title_full_unstemmed Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity
title_short Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity
title_sort azadirachta indica leaf extract as green corrosion inhibitor for reinforced concrete structures: corrosion effectiveness against commercial corrosion inhibitors and concrete integrity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8235770/
https://www.ncbi.nlm.nih.gov/pubmed/34208505
http://dx.doi.org/10.3390/ma14123326
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