Analysis of chloride diffusivity in concrete containing red mud

Analysis of chloride diffusivity in concrete containing red mud

Red mud is a solid waste produced in the alumina production process and, due to its high pH, is classified as hazardous. Its incorporation in concrete mixtures, acting as filler due to the particles fineness, might be an interesting reuse alternative. The focus of this paper is to study the chloride diffusivity of concrete mixtures containing red-mud. The concentration of chlorides was monitored by measuring the conductivity of the anolyte, which was distilled water initially. In addition, the estimation of the chloride ions diffusion coefficients in steady and non-steady conditions, Ds and Dns, was obtained from the ''time-lag'' and ''equivalent time'' between diffusion and migration experiments. Due to superfine particle-size distribution and the "filler" effect, the red mud addition seems to assure lower chloride diffusivity.

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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=S1983-41952012000200002
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spelling oai:scielo:S1983-419520120002000022016-12-20Analysis of chloride diffusivity in concrete containing red mudRibeiro,D.V.Labrincha,J.A.Morelli,M.R. concrete red mud chloride diffusion corrosion Red mud is a solid waste produced in the alumina production process and, due to its high pH, is classified as hazardous. Its incorporation in concrete mixtures, acting as filler due to the particles fineness, might be an interesting reuse alternative. The focus of this paper is to study the chloride diffusivity of concrete mixtures containing red-mud. The concentration of chlorides was monitored by measuring the conductivity of the anolyte, which was distilled water initially. In addition, the estimation of the chloride ions diffusion coefficients in steady and non-steady conditions, Ds and Dns, was obtained from the ''time-lag'' and ''equivalent time'' between diffusion and migration experiments. Due to superfine particle-size distribution and the "filler" effect, the red mud addition seems to assure lower chloride diffusivity.info:eu-repo/semantics/openAccessIBRACON - Instituto Brasileiro do ConcretoRevista IBRACON de Estruturas e Materiais v.5 n.2 20122012-04-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952012000200002en
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.
Analysis of chloride diffusivity in concrete containing red mud
author_facet Ribeiro,D.V.
Labrincha,J.A.
Morelli,M.R.
author_sort Ribeiro,D.V.
title Analysis of chloride diffusivity in concrete containing red mud
title_short Analysis of chloride diffusivity in concrete containing red mud
title_full Analysis of chloride diffusivity in concrete containing red mud
title_fullStr Analysis of chloride diffusivity in concrete containing red mud
title_full_unstemmed Analysis of chloride diffusivity in concrete containing red mud
title_sort analysis of chloride diffusivity in concrete containing red mud
description Red mud is a solid waste produced in the alumina production process and, due to its high pH, is classified as hazardous. Its incorporation in concrete mixtures, acting as filler due to the particles fineness, might be an interesting reuse alternative. The focus of this paper is to study the chloride diffusivity of concrete mixtures containing red-mud. The concentration of chlorides was monitored by measuring the conductivity of the anolyte, which was distilled water initially. In addition, the estimation of the chloride ions diffusion coefficients in steady and non-steady conditions, Ds and Dns, was obtained from the ''time-lag'' and ''equivalent time'' between diffusion and migration experiments. Due to superfine particle-size distribution and the "filler" effect, the red mud addition seems to assure lower chloride diffusivity.
publisher IBRACON - Instituto Brasileiro do Concreto
publishDate 2012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952012000200002
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AT labrinchaja analysisofchloridediffusivityinconcretecontainingredmud
AT morellimr analysisofchloridediffusivityinconcretecontainingredmud
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