Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods

Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods

Red mud, the main waste generated in aluminum and alumina production from bauxite ore by the Bayer process, is considered "hazardous" due to its high pH. The high pH also provides greater protection of rebars, which is reflected in the low corrosion potential and high electrical resistivity (filler effect) of concrete. The corrosion potential was monitored by electrochemical measurements and the electrical resistivity was evaluated using sensors embedded in concrete test specimens. The results showed that the addition of red mud is beneficial to concrete, reducing its corrosion potential and increasing its electrical resistivity. Red mud proved to be a promising additive for concrete to inhibit the corrosion process.

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Main Authors: Ribeiro,D.V., Labrincha,J.A., Morelli,M.R.
Format: Digital revista
Language:English
Published: IBRACON - Instituto Brasileiro do Concreto 2012
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952012000400004
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spelling oai:scielo:S1983-419520120004000042012-09-13Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methodsRibeiro,D.V.Labrincha,J.A.Morelli,M.R. concrete red mud concrete corrosion potential electrical resistivity Red mud, the main waste generated in aluminum and alumina production from bauxite ore by the Bayer process, is considered "hazardous" due to its high pH. The high pH also provides greater protection of rebars, which is reflected in the low corrosion potential and high electrical resistivity (filler effect) of concrete. The corrosion potential was monitored by electrochemical measurements and the electrical resistivity was evaluated using sensors embedded in concrete test specimens. The results showed that the addition of red mud is beneficial to concrete, reducing its corrosion potential and increasing its electrical resistivity. Red mud proved to be a promising additive for concrete to inhibit the corrosion process.info:eu-repo/semantics/openAccessIBRACON - Instituto Brasileiro do ConcretoRevista IBRACON de Estruturas e Materiais v.5 n.4 20122012-08-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952012000400004en10.1590/S1983-41952012000400004
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Ribeiro,D.V.
Labrincha,J.A.
Morelli,M.R.
spellingShingle Ribeiro,D.V.
Labrincha,J.A.
Morelli,M.R.
Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
author_facet Ribeiro,D.V.
Labrincha,J.A.
Morelli,M.R.
author_sort Ribeiro,D.V.
title Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
title_short Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
title_full Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
title_fullStr Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
title_full_unstemmed Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
title_sort effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
description Red mud, the main waste generated in aluminum and alumina production from bauxite ore by the Bayer process, is considered "hazardous" due to its high pH. The high pH also provides greater protection of rebars, which is reflected in the low corrosion potential and high electrical resistivity (filler effect) of concrete. The corrosion potential was monitored by electrochemical measurements and the electrical resistivity was evaluated using sensors embedded in concrete test specimens. The results showed that the addition of red mud is beneficial to concrete, reducing its corrosion potential and increasing its electrical resistivity. Red mud proved to be a promising additive for concrete to inhibit the corrosion process.
publisher IBRACON - Instituto Brasileiro do Concreto
publishDate 2012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952012000400004
work_keys_str_mv AT ribeirodv effectofredmudadditiononthecorrosionparametersofreinforcedconcreteevaluatedbyelectrochemicalmethods
AT labrinchaja effectofredmudadditiononthecorrosionparametersofreinforcedconcreteevaluatedbyelectrochemicalmethods
AT morellimr effectofredmudadditiononthecorrosionparametersofreinforcedconcreteevaluatedbyelectrochemicalmethods
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