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Publication Type
Conference Proceedings
UWI Author(s)
Author, Analytic
Wilson, Kenesha S.; Pinnock, Willard R.
Author Role
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Author Affiliation
Department of Chemistry
Paper/Section Title
Red mud utilization as component of construction material [Abstract]
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Proceedings Title
Proceedings of the Sixth Conference, Faculty of Pure and Applied Sciences edited by Daniel Coore and Robert J.Lancashire.
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Place of Meeting
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Place of Publication
Kingston, Jamaica
Publisher Name
Faculty of Pure and Applied Sciences, University of the West Indies
Date of Publication
2003
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Volume ID
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Location in Work
34-35
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Abstract
The goal of utilizing red mud in some way that would significantly reduce the quantity that is stored as waste each year, is one which has been sought by many researchers over many years. In the effort towards achieving this goal locally, work done and reported by Pinnock and Gordon (1992), Gordon, Pinnock and Moore, (1996) has shown that relatively strong composites can be produced when certain additives are mixed with local red mud. The composites produced are potentially useful as construction material, but it appears that acceptability to local users depends very much on favorable comparison of the strength and durability of the materials with standard Portland cement concrete. None of the composites formulated and tested so far have shown strength and durability which come near to standard concrete. Their work has provided an understanding of the chemical reactions which are involved in the strength development, however, and this has given us a basis for expecting that red mud will act as a pozzolana when added to Portland cement mortars. Red mud could therefore be used to advantage as an additive to such mortars, and so find a use in a construction material which is more likely to be acceptable to local users. In this work we have added various quantities of red mud to Portland cement mortars and have measured compressive strength of the product as the first indicator of usefulness. We have also looked at changes in the X-ray diffraction patterns of the mortar as a way of following the reactions which are occurring. The results obtained so far suggest that the pozzolanic reaction is indeed occurring, and that strengths of mortars can be enhanced by red mud addition within a certain range and under certain conditions. These results will be presented and discussed in some detail.....
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