Abstract
The increase in the environmental concerns highlight the need to build up a sustainable society based on recirculation of our limited natural resources. Our research group has been studying hydrothermal solidification for the recirculation of inorganic waste materials. The wastes generally contain higher amount of aluminum components, yielding the formation of large crystals as the prevention factor of the strength. It was found that the formation of nano-size crystals by the controlling of reaction condition enables the strength development. It was expected that these solidified waste materials show the self-humidity controlling property and the fixation of heavy metals through ion exchange. In this paper, the results of the hydrothermal solidification using inorganic wastes will be discussed.
