Takayuki Shimaoka* and Masataka Hanashima**

*Associate Professor, Faculty of Engineering, Fukuoka University
**Professor, Faculty of Engineering, Fukuoka University

+ Correspondence should be addressed to Takayuki Shimaoka:
Fukuoka University
(8-19-1, Nanakuma, Johnan-ku, Fukuoka 814-01 Japan)

Abstract

The fly ash that is produced with the combustion of municipal wastes has become a special municipal waste according to the amendment of the waste disposal law, so technical developments in stabilization and rendering harmless the fly ash are in progress. In the cement solidification method for fly ash, it is very important to grasp the behavior of stabilized cemented fly ash after landfilling, because there are many factors which make it deteriorate, such as the production of organic acid and carbon dioxide with waste degradation. The behavior of stabilized fly ash by cement solodification in landfills was studied, and final disposal methods for stabilized fly ash are proposed in this report.

Key words: special municipal wastes, fly ash, cement solidificanion, landfill, behavior of stabilized fly ash