• Resources Recycling
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• v.11 no.2
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• pp.36-44
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• 2002

The waste garnet powder as a raw material for clay bricks was studied its recycling. The physical strength of clay bricks are closely dependent both on the contents of $SiO_2$, $Al_2$$O_3$, and $Fe_2$$O_3$in clay and on the viscosity of it. Although the garnet power has very high contents of $SiO_2$, $Al_2$$O_3$, and $Fe_2$$O_3$, it could not substituted to clay because of its low viscosity. Therefore the substitution of sand with waste garnet powder was considered to influence positively on the strength of clay bricks .Mixing ratios of {clay-sand}, {sand-garnet powder}, and {clay-sand-garnet powder} based on weight were controlled in the production of clay bricks. The properties of clay bricks such as compression strength, moisture absorption, shrinkage, and specific gravity has been evaluated. It was shown that the optimal mixing combination was found to be { clay(50%)-sand(30%)-garnet powder(20%)} as a weight basis. The present study indicated possibilities to produce commercially clay bricks with the waste garnet powder. An economical benefit will be produced in viable in view of recycling waste garnet powder.