抄録
This research aims to develop a systematic method for estimating the amount of demolished concrete in urban areas, and to evaluate and compare several recycling scenarios. First, the amount of demolished concrete from buildings and urban infrastructure is estimated based on statistical data and using a geographical information system. Then, through a case study, the economical efficiency of recycling demolished concrete in road subgrades or as new concrete aggregates is evaluated, as well as the case of dumping the demolished concrete in landfill.