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Evaluation of the Inhibitory Gel <i>Aloe </i><i>vera</i> against Corrosion of Reinforcement Concrete in NaCl Medium
Laboratoire de Chimie Physique Organique et d’Analyse Environnementales (LCPOAE), Département de Chimie, Université Cheikh Anta Diop de Dakar, Dakar, Senegal
Civil Engineering Materials Laboratory (LMGC), Ecole Supérieure Polytechnique de Dakar (Senegal), Université Cheikh Anta Diop, Dakar, Sénégal
Laboratoire de Génie Civil et Génie Mécanique (LGCGM), INSA Rennes, Université de Rennes, Rennes, France
Laboratoire de Chimie Physique Organique et d’Analyse Environnementales (LCPOAE), Département de Chimie, Université Cheikh Anta Diop de Dakar, Dakar, Senegal
Laboratoire de Génie Civil et Génie Mécanique (LGCGM), INSA Rennes, Université de Rennes, Rennes, France
Laboratoire de Génie Civil et Génie Mécanique (LGCGM), INSA Rennes, Université de Rennes, Rennes, France
- 1 Laboratoire de Chimie Physique Organique et d’Analyse Environnementales (LCPOAE), Département de Chimie, Université Cheikh Anta Diop de Dakar, Dakar, Senegal
- 2 Civil Engineering Materials Laboratory (LMGC), Ecole Supérieure Polytechnique de Dakar (Senegal), Université Cheikh Anta Diop, Dakar, Sénégal
- 3 Laboratoire de Génie Civil et Génie Mécanique (LGCGM), INSA Rennes, Université de Rennes, Rennes, France
- 4 Laboratoire de Chimie Physique Organique et d’Analyse Environnementales (LCPOAE), Département de Chimie, Université Cheikh Anta Diop de Dakar, Dakar, Senegal
- 5 Laboratoire de Génie Civil et Génie Mécanique (LGCGM), INSA Rennes, Université de Rennes, Rennes, France
- 6 Laboratoire de Génie Civil et Génie Mécanique (LGCGM), INSA Rennes, Université de Rennes, Rennes, France
Materials Sciences and Applications·Volume 15 (2024)·Pages 101–112·Published 27 May 2024·DOI10.4236/msa.2024.155008
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Abstract
Most reinforced concrete structures in seaside locations suffer from corrosion damage to the reinforcement, limiting their durability and necessitating costly repairs. To improve their performance and durability, we have investigated in this paper <i>Aloe </i><i>vera</i> extracts as a green corrosion inhibitor for reinforcing steel in NaCl environments. Using electrochemical methods (zero-intensity chronopotentiometry, Tafel lines and electrochemical impedance spectroscopy), this experimental work investigated the effect of these <i>Aloe </i><i>vera</i> (AV) extracts on corrosion inhibition of concrete reinforcing bar (HA, diameter 12mm) immersed in a 0.5M NaCl solution. The results show that <i>Aloe </i><i>vera</i> extracts have an average corrosion-inhibiting efficacy of around 86% at an optimum concentration of 20%.
KeywordsReinforced ConcreteGreen InhibitorCorrosionReinforcementElectrochemical Methods
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