Hexavalent chromium leaching behavior from concrete debris to seawater

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  • コンクリート殻から海水への六価クロムの溶出挙動

Abstract

<p>More than half of the disaster waste is estimated to be concrete debris. As one of the options for rapid and large-scale processing of concrete debris, a plan to submerge a large portion of concrete debris to the seabed without crushing it and utilize it as an artificial submarine mountain range is noteworthy. Generally, it is not well known what kind of leaching characteristics are exhibited when using concrete debris in seawater, and how to evaluate environmental safety can be an issue. Therefore, we focused on hexavalent chromium, which is known to be leached from concrete debris, and conducted various leaching tests using seawater to investigate the impact of the material on the seawater environment.</p>

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