소각재와 커피슬러지를 이용한 건축외장재 제조

초록

With the advance of industrialization and urbanization, a lot of waste has been discharged and treated by incineration. In Korea, 441,004 ton of MSWI fly ash is discharged, which is composed of bottom ash (about 450,327 ton) and fly ash (about 92,755 ton) in 2008. MSWI fly ash generally contains high content of heavy metals, so it is regarded as hazardous waste. The objective of this research is to prepare brick made from waste materials such as MSWI fly ash, water sludge and coffee sludge. in this study. The optimum mixing ratio for these materials were 19.5% : 19.5% : 1% : 60%, respectively. They were dried at room temperature for 48 hrs, and heated for 4 hrs at 60℃ and for 6hrs at 100℃. After that, the dried bricks were sintered at 5℃/min to 1,115℃, and kept for 2 hrs at that temperature. Maximum compressive strength was 19.1 MPa at the optimal condition in our study.

키워드