2020 Volume 58 Issue 12 Pages 944-951
As a tsunami countermeasure for the megafloat anchored in the harbor of the Fukushima Daiichi Nuclear Power Plant, work is being carried out to stabilize the megafloat by relocating it, grounding it, filling the inside with mortar, and preparing the upper part of the megafloat for effective use as a harbor yard. As this work is carried out in a radiation controlled area, many procurement-related restrictions and issues apply regarding the materials to be used. Therefore, a plant was established on the site to manufacture the artificial ground material to be used for the megafloat grounding mound, the internal filler of the megafloat, and the revetment blocks for the construction of the gravity wharf. This paper presents an outline of the construction, the specifications of the construction materials, and the application results.
