Evaluating scenarios for the management of construction debris caused by an earthquake (case study of Tehran)

The produced construction debris is always one of the crises after the earthquake in order to properly manage and dispose. According to global experiences, recycling construction debris caused by earthquakes is much more economical and environmentally friendly than using new materials. In this study, considering the city of Tehran, it has been tried to investigate possible scenarios for the recycling of construction waste produced based on decision-making and comparison criteria. In this regard, the TOPSIS decision-making model was used. Four scenarios were evaluated based on 10 review criteria according to experts. Also, using ArcGIS software, the potential distribution of construction waste production based on the urban population layer with the scale of localities has been determined and presented. According to the results of the scores that were collected, the most suitable model for the management of construction waste with the material recycling approach can be proposed. It is proposed to establish a site with a fixed location for the establishment of shredders, industrial mills, as well as special conveyor systems for the management of mineral recycling depots. Also, the other main unit of this complex, the metal material recovery unit, should also be located on the same site. According to the obtained results, recycling systems with fixed installation using sewage transfer to the site have been proposed for use in crisis conditions in Tehran.