Abstract
The amount of coal ash exhausted from the recent power plants has reached 1,100 tons every year in Japan. Recycling rate of coal ash is 97%, but the number of products made of recycled materials as coal ash is not so large, yet. Since clinker ash commonly has excellent water absorption and retention, we tried to make a sintered porous material from clinker ash. In this study, we tried to produce multilayered structure of sintered porous material with the clinker ash powders of different particle size and to measure their characteristics. As results, it was found that these multilayered structure of sintered porous material showed higher evaporative performance.