Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain

The present study investigates the effect of fly ash (FA) as a corrosion inhibitor on the electrochemical performance of 316L stainless steel concrete reinforcement in a simulating concrete pore solution exposed to a coastal environment that is severely polluted by acid rain (AR). The corrosion beha...

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Autores principales:	Tsouli Sofia, Lekatou Angeliki G., Goutzos Pantelis, Kleftakis Spyridon
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/384f6d64eab2412aa725c050be95016b
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spelling	oai:doaj.org-article:384f6d64eab2412aa725c050be95016b2021-12-02T17:13:46ZEffect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain2261-236X10.1051/matecconf/202134902015https://doaj.org/article/384f6d64eab2412aa725c050be95016b2021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_02015.pdfhttps://doaj.org/toc/2261-236XThe present study investigates the effect of fly ash (FA) as a corrosion inhibitor on the electrochemical performance of 316L stainless steel concrete reinforcement in a simulating concrete pore solution exposed to a coastal environment that is severely polluted by acid rain (AR). The corrosion behavior of 316L stainless steel is examined by means of cyclic (reverse) polarization in order to evaluate the susceptibility of 316L rebars to localized corrosion. A slightly alkaline solution simulating corroded concrete that has exposed the reinforcement directly to acid rain attack (pH ≈ 8) was chosen as electrolyte. The solution contained Ca(OH)2 partially replaced by FA (0 wt.% - 25 wt.%), an acid rain simulating solution and 3.5 wt% NaCl. The beneficial effect of FA partially replacing Ca(OH)2 (up to 20 wt.% FA) on the corrosion resistance of 316L rebars was manifested by slower corrosion kinetics, nobler corrosion potentials and less susceptibility to localised corrosion. However, these trends were reversed at 25 wt.% FA. The above performance was compared with the corrosion performance in the same electrolyte but without the addition of 3.5 wt.% NaCl.Tsouli SofiaLekatou Angeliki G.Goutzos PantelisKleftakis SpyridonEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 02015 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Tsouli Sofia Lekatou Angeliki G. Goutzos Pantelis Kleftakis Spyridon Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain
description	The present study investigates the effect of fly ash (FA) as a corrosion inhibitor on the electrochemical performance of 316L stainless steel concrete reinforcement in a simulating concrete pore solution exposed to a coastal environment that is severely polluted by acid rain (AR). The corrosion behavior of 316L stainless steel is examined by means of cyclic (reverse) polarization in order to evaluate the susceptibility of 316L rebars to localized corrosion. A slightly alkaline solution simulating corroded concrete that has exposed the reinforcement directly to acid rain attack (pH ≈ 8) was chosen as electrolyte. The solution contained Ca(OH)2 partially replaced by FA (0 wt.% - 25 wt.%), an acid rain simulating solution and 3.5 wt% NaCl. The beneficial effect of FA partially replacing Ca(OH)2 (up to 20 wt.% FA) on the corrosion resistance of 316L rebars was manifested by slower corrosion kinetics, nobler corrosion potentials and less susceptibility to localised corrosion. However, these trends were reversed at 25 wt.% FA. The above performance was compared with the corrosion performance in the same electrolyte but without the addition of 3.5 wt.% NaCl.
format	article
author	Tsouli Sofia Lekatou Angeliki G. Goutzos Pantelis Kleftakis Spyridon
author_facet	Tsouli Sofia Lekatou Angeliki G. Goutzos Pantelis Kleftakis Spyridon
author_sort	Tsouli Sofia
title	Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain
title_short	Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain
title_full	Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain
title_fullStr	Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain
title_full_unstemmed	Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain
title_sort	effect of fly ash on the electrochemical performance of 316l stainless steel concrete reinforcement in saline environments attacked by acid rain
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/384f6d64eab2412aa725c050be95016b
work_keys_str_mv	AT tsoulisofia effectofflyashontheelectrochemicalperformanceof316lstainlesssteelconcretereinforcementinsalineenvironmentsattackedbyacidrain AT lekatouangelikig effectofflyashontheelectrochemicalperformanceof316lstainlesssteelconcretereinforcementinsalineenvironmentsattackedbyacidrain AT goutzospantelis effectofflyashontheelectrochemicalperformanceof316lstainlesssteelconcretereinforcementinsalineenvironmentsattackedbyacidrain AT kleftakisspyridon effectofflyashontheelectrochemicalperformanceof316lstainlesssteelconcretereinforcementinsalineenvironmentsattackedbyacidrain
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Effect of Fly Ash on the Electrochemical Performance of 316L Stainless Steel Concrete Reinforcement in Saline Environments Attacked by Acid Rain

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