Circular economy applications in the construction industry: A global scan of trends and opportunities
Circular economy applications in the construction industry: A global scan of trends and opportunities
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DOI：
10.1016/j.jclepro.2021.129125
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发表时间：
2021-10-08
影响因子：
11.1
通讯作者：
Haas, Carl
中科院分区：
文献类型：
--
作者：
Guerra, Beatriz C.;Shahi, Sheida;Haas, Carl
建筑业每年在全球消耗超过30亿吨原材料。采用循环经济原则可以帮助减少浪费，并通过提高建筑生产率每年节省超过1000亿美元。本研究的首要目标是调查建筑行业采用循环经济原则的状况。采用了多案例研究方法，并在全球范围内对81家在建筑行业实施循环经济原则的公司进行了调查。开发了一个具有33个属性的知识框架来对公司进行分类，并从整体重点、生命周期运营和业务运营方面对他们的举措进行了分析。这些公司被归类为七个确定的业务类型，并评估了他们采用的九个主要循环业务模式。会上确定了机会差距和有待改进的领域，并提出了加快向建筑业循环经济转变的步骤。此外，还讨论了在美国、加拿大和欧洲建筑业实施循环经济的具体机会和前景。值得注意的是，这项研究填补了文献中的空白，通过提供经验证据的状态，采用循环经济的原则，在建筑业。所提出的研究结果可以帮助学者和行业从业者了解建筑公司采用循环经济原则的现状，并加快建筑循环化的步伐。此外，本研究突出了当前循环经济在理论和实践上的差异。
Construction consumes more than 3 billion tons of raw materials globally each year. Adopting circular economy principles can help reduce waste and save more than $100 billion per year by improving construction produc-tivity. This study's overarching objective was to investigate the state of adoption of circular economy principles in the construction sector. A multiple case study approach was used, and adoption opportunities were investi-gated in a global scan of 81 companies implementing circular economy principles in the construction industry. A knowledge framework with 33 attributes was developed to classify the companies, and their initiatives were analyzed in terms of overall focus, lifecycle operations, and business operations. These companies were cate-gorized into seven identified business types, and their adoption of nine major circular business models was evaluated. Opportunity gaps and areas for improvement were identified, and steps for accelerating the shift towards a circular economy in construction were suggested. Furthermore, specific opportunities and prospects were discussed for implementing a circular economy in the United States, Canada, and the European construction industries. Notably, this study fills a gap in the literature by providing empirical evidence of the state of adoption of circular economy principles in the construction sector. Presented findings can help both academics and in-dustry practitioners understand the current state of adoption of circular economy principles by construction companies and accelerate steps towards circularity in construction. Furthermore, the present study highlights the current differences between circular economy in theory and practice.