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AMBROISE, J.; PÉRA, J. Red mud, an interesting secondary raw material. In: CIB SYMPOSIUM ON CONSTRUCTION & ENVIROMENT: THEORY INTO PRACTICE, 2000, São Paulo. Anais... São Paulo: USP, 2000.
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Número de Trabalhos: 2 (Com arquivo PDF disponíveis: 2)
Citações: 2
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Dados do autor na base InfoHab:
Número de Trabalhos: 2 (Nenhum com arquivo PDF disponível)
Citações: 4
Índice h: 2  
Co-autores: Nenhum co-autor encontrado

Abstract

Bauxite is refined into alumina using the Bayer process. Bauxite is washed, ground and dissolved in caustic soda at high pressure and temperature. The resulting liquor contains a solution of sodium aluminate and undissolved bauxite residues containing iron, silicon and titanium. These residues are known as "red mud". Each tonne of alumina produced leaves a residue of around one tonne of mud. Red mud is often landfilled or disposed off in ponds. It can be used for road construction and building materials. This paper presents some innovative valorizations of red mud. A slurry of red mud can be used as viscosity agent for the development of self-leveling concrete instead of chemical admixtures. When calcined at 650-750°C, red mud develops interesting pozzolanic properties and can be used as pigment for colored concrete.
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