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Life cycle assessment of a Danish office building designed for disassembly

机译：设计用于拆卸的丹麦办公楼的生命周期评估

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摘要

The building industry is responsible for a large proportion of anthropogenic environmental impacts. Circular economy (CE) is a restorative and regenerative industrial economic approach that promotes resource efficiency to reduce waste and environmental burdens. Transitioning from a linear approach to a CE within the building industry will be a significant challenge. However, an insufficient number of quantitative studies exist to confirm the potential (positive) environmental effects of CE within the built environment as well as a consistent method for characterizing these effects. This paper considers key methodological issues for quantifying the environmental implications of CE principles and proposes a life cycle assessment (LCA) allocation method to address these issues. The proposed method is applied to a case study of a Danish office building where the concrete structure is designed for disassembly (DfD) for subsequent reuse. The potential environmental impact savings vary between the different impact categories. The savings are significantly influenced by the building's material composition, particularly the number of component-use cycles as well as the service life of the building and its components. The substitution of other material choices (e.g. glass and wood) for the concrete structure exhibited a potential increase in impact savings.
机译：建筑业负责大部分人为环境影响。循环经济（CE）是一种恢复性和再生工业经济方法，促进资源效率，以减少浪费和环境负担。从建筑业内的CE中的线性方法转变将是一个重大挑战。然而，存在数量不足的定量研究，以确认CE在建筑环境中的潜在（正）环境影响以及表征这些效果的一致方法。本文考虑了用于量化CE原则的环境影响的关键方法问题，并提出了一种解决这些问题的生命周期评估（LCA）分配方法。所提出的方法适用于丹麦办公楼的案例研究，其中混凝土结构设计用于拆卸（DFD），供随后重用。潜在的环境影响储蓄在不同的影响类别之间变化。储蓄受到建筑材料组合物的显着影响，特别是元件使用周期的数量以及建筑物的使用寿命及其组件。用于混凝土结构的其他材料选择（例如玻璃和木材）的替换表现出影响的潜在增加。

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