The Great East Japan Earthquake resulted in extensive damage and left a vast amount of debris. The debris from the disaster has been incinerated to reduce the volume. This study focused on the predicted future demand of land soil, for example, to use in post-disaster reconstruction works. In order to examine the availability to recycle and utilize the incineration bottom ash from the disaster debris, the material properties of the incineration bottom ash was evaluated by soil experiments. Features of incineration bottom ash recycled material were compared with general incineration bottom ash from F City. A modified CBR test (JIS A 1211) was adapted to evaluate the availability of using the material as subgrade and roadbed material. A constant pressure direct shear test was employed to assess the shear properties. The results show that the incineration bottom ash recycled material has equivalent shear properties with regard to physical composition compared to general incineration bottom ash. The study reports that there is a possibility for incineration bottom ash recycled material to be effectively utilized as a roadbed material and used as a soil material with varied strengths.
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机译：东日本大地震造成了广泛的破坏，并留下了大量的碎片。灾难中的残渣已被焚化以减少体积。这项研究侧重于预测的未来土地需求，例如，将其用于灾后重建工作。为了检查可回收利用来自灾害残骸的焚烧炉底灰的可能性，通过土壤实验对焚烧炉底灰的材料特性进行了评估。将焚烧炉底灰的再生材料的特性与F City的普通焚烧炉底灰进行了比较。修改后的CBR测试（JIS A 1211）适用于评估将该材料用作路基和路基材料的可用性。采用恒压直接剪切试验评估剪切性能。结果表明，与普通焚烧底灰相比，焚烧底灰再生材料在物理组成方面具有相同的剪切性能。该研究报告指出，焚烧底灰回收材料有可能被有效地用作路基材料和用作强度不同的土壤材料。
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