EFFECTIVENESS OF GRANULATED COAL ASH ON MARINE ENVIRONMENTAL CREATION PROJECT AT HYAKKAN PORT

Abstract

 Marine environmental creation project underway at Hyakkan port located in the east coast of Ariake Sea is aiming to improve the habitat for sea creature by making mud flat or shallow bottom with utilizing dredged soil. Due to the regulation of collecting sea sand in Kumamoto Prefecture, it is our new challenge to ensure the substitute material for sand. In addition, it should be considered that the covering sand may sink down and dredged soil may come up to the surface, in the case of covering the sand over the soft dredged soil. At the result of test construction of granulated coal ash, that has past record as a substitute for sand, used as a ground stabilizer, we can confirm the effectiveness on the aspect of the ground stabilization and habitat for benthos.