BASIC STUDY ON UTILIZATION OF UNLAWFULLY DUMPED
INDUSTRIAL WASTES FOR CONCRETE MATERIALS
29th Our World in Concrete and Structures (OWICs) - 2004
M. Shoya*, Hachinohe Institute of Technology, Japan
Y. Tsukinaga, Hachinohe Institute of Technology, Japan
M. Aba, Hachinohe Institute of Technology, Japan
H. Yamamichi, Hachinohe Institute of Technology, Japan
Y. Hosokawa, Kitasato University, Japan
T. Sugawara, Hachinohe National College of Technology, Japan
The largest scale of unlawfully dumped industrial wastes, in the boundary between
Aomori and Iwate prefectures in the Tohoku district of Japan, becomes a serious
social problem, because of the environmental pollutions, such as the contamination
of source of water supply, peculiar smelling, sight damage and so on. The
incineration and embedding of industrial wastes have been the main procedures in
their treatment. However, the incineration method is required to consume a high
percentage of energy and give off carbonic acid gas simultaneously. The embedding
method may be generating the soil and water pollutions, which the injurant leaks out
from the embedding land and the maintenance and management of the embedding
land in a safe and continued manner must be taken into account.
In this study, in order to develop the new treatment method for improving the
environmental problems, industrial wastes were incinerated and melted for making
slags. Then their physical and chemical properties were investigated and analyzed.
The fundamental research for the utilization of melting slag to concrete materials
such as aggregates and cement substituting materials, are now being started.