Study on reuse of construction waste surplus and de-aired EPS as the lightweight geo-materials

在日本，处理每年都在增加的垃圾一直是一个重要问题。包括EPS废弃物在内的工业废弃物由于处理空间不足，需要开发其再利用技术，作为一种新的资源。此外，城市开发或地下利用产生了大量的建筑剩余土，而处置空间有限。因此，认为利用EPS废弃物和建筑剩余土开发轻质回填材料是一条既经济又环保的可行途径。本研究开发了一种有效利用EPS废弃物和建筑剩余土壤的回收技术。阐述了减小EPS垃圾体积的方法，通过试验和数值试验，探讨了EPS垃圾和建筑剩余土作为轻质回填材料的可能性。

Processing of the waste that increases every year has been an important issue in Japan. Industrial waste including EPS waste runs short of disposing space, the development of its reuse technology, as a new resource is needed. Moreover, a lot of construction surplus soil is produced by urban development or underground use while the disposing space is limited. Accordingly, it is thought that development of lightweight backfill material that used EPS waste, and construction surplus soil is useful approach not only on economical but also environmental points. In this study, a recycling technique for effectively use EPS waste and construction surplus soil has been developed. The method of reducing the volume of EPS waste is described, The possibility of recycling EPS waste and construction surplus soil as the lightweight backfill material is discussed based on the experimental and numerical examinations.