THERMAL CONDUCTIVITY OF INSULATION BRICK DEVELOPED FROM SAWDUST AND SELECTED UGANDA CLAYS

Edward. Bwayo, S. K. Obwoya

Abstract: This paper presents a study on the effect of particle size of a mixture of kaolin and ball clay incorporated with wood sawdust on thermal conductivity of fired bricks. Powders of kaolin, ball clay and saw dust were mixed in certain proportions then compacted to high pressure of 50MPa before being fired to a temperature of 950 0C. The results show that thermal conductivity increases with decrease in particle size of kaolin and ball clay, but decreases with increase in particle size of sawdust.

Keywords: Thermal conductivity; sawdust; chemical composition; thermal insulator; porosity; ceramic material.

DOI: https://doi.org/10.15623/ijret.2014.0309043