| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide artificial building stone suitable for materials to be sunk in the water so as to form a seaweed bed. SOLUTION: When this building stone to be sunk in the water is made from a mixture, as a raw material, of slag from a steel-manufacturing process as a principal raw material with an additive, the slag comprises at least one kind selected from a group consisting of granule slag, coarse grain-form one and small aggregated one, and at least part of the additive comprises cement. The mixture of the slag with the additive is made to consolidate and to be aggregated by CaCO3 formed through carbonation reaction as a binder.</p> |
