THE USE OF SAWDUST WASTE ON PHYSICAL PROPERTIES AND THERMAL CONDUCTIVITY OF FIRED CLAY BRICK PRODUCTION
Nonthaphong Phonphuak
Abstract
In this paper, the effects of incorporation of sawdust waste on the properties of fired claybricks were investigated. Clay bricks fabricated with 0%, 2.5%, 5%, 7.5%, and 10% by weight of sawdustwaste were tested. The clay brick specimens were firing at 900 °C, 1000 °C, and 1100 °C for study the waterabsorption, bulk density, apparent porosity, compressive strength, and thermal conductivity of the fired claybricks. The experimental results found that the using of sawdust waste reduced the bulk density andcompressive strength of the specimens. It was observed their apparent porosity ratios up to 30% improvedwith increasing of sawdust waste up to 10% by weight after firing at 900 °C. The compressive strength ofbricks specimen with 2.5% by weight of sawdust waste addition and fired at 1100 °C showed a higher than ofvalue strength as required by ASTM C62-13a. In addition, the thermal conductivity of the porous fired claybricks specimens with 2.5-10% by weight sawdust waste addition produced at 1000 °C compared to the firedclay brick specimens without additive, decreased from 0.47 to 0.22 W/mK. The results thus showed thatsawdust waste was a potential material for use as a pore former additive to raw clay-brick production.