The application of response surface methodology to determine the level parameter process in the wasted of powder coal solid brick manufacturing

Abstract

Nowadays, the solid brick demand is increasing due to of some economically conditions. Generally, the solid brick is manufactured by mixing the raw material cement and sand, and it causes.that the solid brick’s price is relatively high. One alternative to subtitute the material is by using the wasted powder coal that has a cheaper cost. The purpose of this research is to find out the level of factors and their combinations that significantly influence the resistanced pressured strength of the wasted of powder coal solid brick. Response Surface Method has been used as the continuation of Taguchi Method due to that the two steps of the Taguchi Method could not be fulfilled. It is also found the combination of factors and their levels that minimized the variance of the value responses. The results had been implemented and it is proved that the resistanced pressured strength of the brick is increase and the responce variance is much smaller compared to the historical data.