The construction industry is shifting from a conventional linear practice towards a circular economy sector. Led by the European Union (EU) Green Deal, initiatives such as the EU Circular Economy Action Plan, Renovation Wave, and ‘Fit-for-55’ package aim to minimize emissions and material use until 2050. Previous initiatives focused on the emissions related to the use phase of the built environment, so-called Scope 1 carbon emissions. On the other hand, several other emission sources exist in the whole life cycle of buildings and cities. Circularity can become a key element in mitigating the embodied carbon of building materials that originate from the production and end-of-life processes. Recently, cities and neighborhoods have been considered as suitable scale to develop and test innovation solutions. On the other hand, there is no consensus on measuring circularity at urban scale and most of the recent studies originate from the EU. Then, this study aims to explore urban circularity indicators in the context of developing countries. First, existing urban circularity indicators are reviewed and then two case study areas with different urban settings from Turkiye are selected for exploring the indicators. Several recommendations are provided for the utilization of indicators in distinct urban settings and climate regions.

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Critical Review of Circularity Indicators for Neighborhoods in Developing Countries

  • Nuri Cihan Kayaçetin

摘要

The construction industry is shifting from a conventional linear practice towards a circular economy sector. Led by the European Union (EU) Green Deal, initiatives such as the EU Circular Economy Action Plan, Renovation Wave, and ‘Fit-for-55’ package aim to minimize emissions and material use until 2050. Previous initiatives focused on the emissions related to the use phase of the built environment, so-called Scope 1 carbon emissions. On the other hand, several other emission sources exist in the whole life cycle of buildings and cities. Circularity can become a key element in mitigating the embodied carbon of building materials that originate from the production and end-of-life processes. Recently, cities and neighborhoods have been considered as suitable scale to develop and test innovation solutions. On the other hand, there is no consensus on measuring circularity at urban scale and most of the recent studies originate from the EU. Then, this study aims to explore urban circularity indicators in the context of developing countries. First, existing urban circularity indicators are reviewed and then two case study areas with different urban settings from Turkiye are selected for exploring the indicators. Several recommendations are provided for the utilization of indicators in distinct urban settings and climate regions.