The use of red sand as fine aggregate in concrete manufacture has been investigated as well as the use of fly ash as a cement replacement. The experimental work consisted of casting various concrete mixes including a control and comparing standard properties. Properties tested included compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, water permeability, chloride diffusion, pH dependence leaching and particle morphology. The results show that the concrete strength is not significantly affected when natural sand is replaced completely with red sand. The durability tests indicated high water permeability and high chloride diffusion due to the porosity of the red sand concrete, likely due to the low slump value. Leaching tests did not exceed New South Wales EPA guidelines._x000D_
FORMAL CITATION:Sri wahyuni, A, Nikraz, H, Jamieson, E and Cooling, D, 2006. Sustainable use of bauxite residue sand (red sand) in concrete, in Proceedings Green Processing 2006, pp 105-112 (The Australasian Institute of Mining and Metallurgy: Melbourne).