Contribution 11
Submitted by: Takeshi Katsumi, Kyoto University, Japan
Treatment of disaster debris – soil-waste mixture – and characterization/utilization of recovered soils contributing to disaster recovery
Sample Description
(1) Course Name/Type: Environmental Geotechnics/Elective course at the 1st year of masters civil and environmental engineering curriculum
(2) Course Emphasis: recovered soil, soil-waste mixture, disaster debris, disaster recovery, recycling
(3) Descriptive Title of Sample: Treatment of disaster debris – soil-waste mixture – and characterization/utilization of recovered soils contributing to disaster recovery
(4) Brief Teaching Note: The contents of this slide aim to provide the information regarding the contribution of environmental geotechnics to disaster recovery. The 2011 Tōhoku earthquake and tsunami generated ~30 million tons of disaster debris, requiring immediate and proper treatment under severe constraints such as limited landfill capacity. Soils were recovered by means of separation treatment of soil-waste mixtures of disaster debris. Research was necessary to determine efficient treatment capable of achieving both effective soil recovery and better soil quality. Pilot-scale test embankments were constructed to investigate the behavior of the embankments created with the recovered soils in which a small fraction of remaining waste might exist, yet no adverse effects were observed in terms of engineering properties and environmental suitability. Such efforts of geotechnical and geoenvironmental engineers contributed to the strategic utilization of recovered soils and the fast and smooth disaster recovery.
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