Development of Porous-Type Seaweed Bed Block Made of Steel-Slag andNatural Pozzolan

Isoyake（珊瑚滩）已经成为全球日益严重的问题。作为回收技术的一部分，利用钢渣和天然火山灰等未利用资源制作了posc（多孔型炼钢渣混凝土）原型，并对其力学性能和供铁能力进行了研究。因此，获得了有关posc力学性能的基本知识。此外，还证实了人工海水中铁的长期洗脱作用。结果表明，东储层对沿海地区的地震恢复具有一定的促进作用。

Isoyake (coralline flat) has been a growing problem around theworld. As a part of the recovering techniques, a prototype of POSSC (Porous-typeSteel-making Slag Concrete) utilizing unused resources such as steel slag and naturalpozzolan is manufactured, and its mechanical properties and iron-supply ability areinvestigated in this study. As a result, fundamental knowledge about the mechanicalproperties of the POSSC is obtained. In addition a long-term elution of iron from thePOSSC in the artificial seawater is confirmed. It is suggested that the POSSC has apotential to contribute to the recovery from the Isoyake in coastal areas.