A Holistic Framework Proposal for Circular Construction from Current Trends, System Needs, and Sustainable Objectives
摘要
The adverse effects of the built environment on ecosystems are aggravated by the looming threat of climate change impacts on society. Given that the construction sector significantly contributes to emissions, a shift is imperative to curtail its expansion and mitigate environmental and social impacts. This paper aims to analyse the current trends, system needs, and sustainable objectives within the construction sector from a location-specific perspective to identify flaws, unaddressed issues, bottle necks, and areas for improvement. To that end, sustainability and circularity metrics, trends in decision-making processes, the utilisation of Building Information Modelling (BIM), its integration with complementary technologies, and a state-of-the-art holistic assessment of buildings throughout their entire life cycle are examined. Once evaluated, a comprehensive framework proposal is outlined to address these topics, with a priority on promoting circular economy (CE) practices, particularly circular degrowth, with the aim of alleviating the adverse effects of the construction sector on the climate. Findings show that (i) circularity metrics are seldom incorporated into LCSA processes, provoking lack of information, (ii) automated decision-making criteria are infrequently utilised in construction projects, (iii) data visualisation remains uncommon in BIM environments, and (iv) product selection should not be conducted in isolation but rather should consider entire system typologies within the project. These findings, along with the proposed holistic framework, present an opportunity to transform the built environment into a more sustainable entity.