Adding Sawdust and Rice husk to refractory clay affects its properties. Refractoriness decreases from 1300C to 1200C with additives. Shrinkage reduces from 3.89% to 3%. Thermal shock resistance improves with additives. Porosity increases with additives, with Rice husk having 36.74% and Sawdust having 45.34%. Bulk density decreases with Sawdust and Rice husk. Silica content decreases from 62% to 54% with additives. Alumina content decreases from 20% to 12%. Iron oxide content increases slightly with additives.