From Buildings’ End of Life to Aggregate Recycling under a Circular Economic Perspective: A Comparative Life Cycle Assessment Case Study

Sustainability

Oumaya Yazoghli-Marzouk¹  Tiffany Desbois²  Gaetano Di Mino³  Konstantinos Mantalovas³  Anne-Sophie Colas⁴  Adélaïde Feraille⁵  Ambroise Lachat⁵ 

[1] Cerema, Direction Centre Est, Agence Autun, Boulevard Giberstein, BP 141, F-71405 Autun, France;Cerema, Direction Ouest, 5 Rue Jules Vallès, F-22000 Saint-Brieuc, France;Dipartimento di Ingegneria, Università degli Studi di Palermo, 90128 Palermo, Italy;GERS-RRO, University Gustave Eiffel, IFSTTAR, University Lyon, F-69675 Lyon, France;Lab Navier, Ecole des Ponts, University Gustave Eiffel, CNRS, 6-8 Av. B. Pascal, MLV CEDEX 2, F-77455 Champs-sur-Marne, France;

关键词: construction and demolition waste;    life cycle assessment;    circular economy;    recycling;    recycled aggregates;    end of life;   

DOI  :  10.3390/su13179625

来源: DOAJ

【 摘 要 】

The demolition of buildings, apart from being energy intensive and disruptive, inevitably produces construction and demolition waste (C&Dw). Unfortunately, even today, the majority of this waste ends up underexploited and not considered as valuable resources to be re-circulated into a closed/open loop process under the umbrella of circular economy (CE). Considering the amount of virgin aggregates needed in civil engineering applications, C&Dw can act as sustainable catalyst towards the preservation of natural resources and the shift towards a CE. This study completes current research by presenting a life cycle inventory compilation and life cycle assessment case study of two buildings in France. The quantification of the end-of-life environmental impacts of the two buildings and subsequently the environmental impacts of recycled aggregates production from C&Dw was realized using the framework of life cycle assessment (LCA). The results indicate that the transport of waste, its treatment, and especially asbestos’ treatment are the most impactful phases. For example, in the case study of the first building, transport and treatment of waste reached 35% of the total impact for global warming. Careful, proactive, and strategic treatment, geolocation, and transport planning is recommended for the involved stakeholders and decision makers in order to ensure minimal sustainability implications during the implementation of CE approaches for C&Dw.

【 授权许可】

Unknown