Alternative resource of incineration bottom ash for ceramic tile production

In long run, the ceramic industry's environmental footprint is a serious issue for its survival. This study focused on the substitution of clay (kaolin) by incinerated bottom ash, which is generated from reppi waste to energy power plants for ceramic wall tile production. Dry pressed ceramic wall tile samples were prepared by adding bottom ash from 0 to 60 wt% with clay (kaolin). The sample was analyzed after sintered at 1110 degrees C for the residence time of 45 min by testing water absorption, breaking strength, and flexural strength. The water absorption is greater than 10%, and higher flexural strength of 24.83 MPa was obtained for the clay with 30 wt% incinerated bottom ash addition. Encouraging test result has been obtained on using up to 30% of incineration bottom ash in the manufacturing of dry pressed ceramic wall tile to substitute clay (kaolin).