Abstract
Recent years, a new recycling technology for ashes from municipal solid wastes incinerators as rawmaterials of cement has been developed. This technology is considered to prevent the environment from secondarypollution and reduce the volume of final disposed materials. However, there are still several unclear points about the elutionbehavior of the heavy metal from the cement.
In this research, several kinds of cements were made with fly ash from municipal solid wastes incinerators as raw materials, and the elution behavior of these cements was examined. As a result, we found the burning conditions and generation ofalite in the cements made. In the leaching tests, it was found that Pb didn't observed. However, Cr (VI) was detected overenvironmental quality standard in Japan even from the cement with 10% of fly ash. Moreover, those heavy metals seemed tovaporized to the air through burning procedure.
