| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a solidified body by using paper sludge incineration ash as a main raw material, the solidified body suitable for an extender material for a roadbed material which is high in strength and restrains a hazardous substance from eluting.SOLUTION: Coal ash, gypsum dihydrate, and water and/or warmed water are added to incineration ash which is generated when paper sludge is subjected to incineration processing, and the resultant mixture is kneaded and then cured. As this gypsum dihydrate, gypsum dihydrate which is a byproduct in flue-gas desulfurization, gypsum dihydrate which is derived from a waste gypsum board, and coal ash which is treated as waste can also be used to solve the issue of the reduction of waste. |
