Abstract
Rice husk ash (RHA) has long been known to possess high silica content. The abundance of rice husk as agricultural waste makes it the most promising to be used as a supplementary cementations and ceramic material. In this study RHA was used as an additive material on porcelain body. The rice husk was subjected to the chemical pretreatment with 2M HCL, 25 0 C before calcinations to increase silica content of the husk ash. The pressed pellets were sintered at the temperature of 1200 0 C and soaked for 2 hours. It was found that progressive addition of RHA in a porcelain body resulted in early vitrification of the mixture. The compressive strength was the highest at 40wt% addition of RHA. Porosity was the least at 40wt%. It can therefore be concluded that 40wt% addition of RHA into the porcelain body is the best composition. Keywords: RHA, Porcelain, Compressive Strength, Bulk Density, Porosity
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