A Study for Unit Requirement and Material Classification of Construction Wastes for Improving Rate of Material Recycle

물질재활용률 향상을 위한 건설폐기물 성상별 분류 및 발생 원단위 산정에 관한 연구

The quantity of construction wastes have been continuously increasing 178,120ton/day in 2010 compared to 148,489ton/day in 2004 such as concretes, asphalt concretes, metals, woods, synthetic resins, etc due to increased demolishing old apartments and expanding social facilities. Therefore, national efforts including department of environment, many universities and research centers have been studying to establish an effective system for reducing amount of waste, as well as improving rate of material recycle of construction wastes. One of the very best is to set up the exact basic unit of construction wastes for both new construction and demolition work. The purpose of this study was to classify construction wastes based on rate of material recycle and analyze basic unit of new construction and demolition work from analysis of a lot of data from construction company, as well as a field study. The types of construction wastes were classified into six for new construction and five for demolition work. The results for units of construction wastes showed that generation of concrete classes and mixed wastes was significantly greater than others specifically, apartment buildings. In conclusion, exacting separation and sorting efforts at on-site require to reduce waste amounts and activate rate of material recycle, as well as efforts on establishing systemized management.