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.
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 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Chloride diffusivity in red mud-ordinary portland cement concrete determined by migration tests
by: Ribeiro,Daniel Véras, et al.
Published: (2011) -
Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods
by: Ribeiro,D.V., et al.
Published: (2012) -
Potential use of natural red mud as pozzolan for Portland cement
by: Ribeiro,Daniel Véras, et al.
Published: (2011) -
Concretes with red mud coarse aggregates
by: Oliveira,Dênio Ramam Carvalho de, et al.
Published: (2012) -
Analysis of the chloride diffusion coefficients by different test methods in concrete mixtures containing metakaolin and high-slag blast-furnace cement
by: Guignone,Guilherme Cunha, et al.
Published: (2019)