Quantifying and spatializing building material stock and renovation flow for circular economy
Quantifying and spatializing building material stock and renovation flow for circular economy
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DOI：
10.1016/j.jclepro.2022.135765
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发表时间：
2023-01
影响因子：
11.1
通讯作者：
Rezvan Mohammadiziazi;M. Bilec
中科院分区：
文献类型：
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作者：
Rezvan Mohammadiziazi;M. Bilec
取、造、废的线性系统导致了有害的环境影响和材料使用;循环经济战略可能带来好处。由于建筑行业是材料的主要消费者，并对许多环境影响做出贡献，因此它是实施循环经济战略的主要部门。了解在哪里和什么材料是可用的，由于翻新和拆除/解构是缺乏在美国，因此，实施循环经济战略，如在建筑物中再利用将是增量最好的。材料库存和流动分析可用于通过累积的材料和建筑物的材料流动来了解基线。在这项研究中，我们开发了一个自下而上的模型，使用我们以前开发的城市建筑能源模型的各个方面来分析商业建筑中特定材料的积累和更新流程。我们专注于翻新，因为这一领域被确定为文献中的空白。本文采用的摄影测量和图像处理技术提供了使用建筑物实际物理属性而不是假设的机会，从而提高了自底向上模型的精度。结果表明，混凝土（37%），砖（30%）和矿物（17%）构成了大部分积累的材料。此外，不同组分中的物质分布也存在显著差异。外墙中砖的质量最高;而屋顶和地板中最大的质量分别是隔热材料和矿物质。砖，其次是矿物和混凝土，在2020年和2030年的翻新流量中占最大份额。这些成果有助于决策者和企业就建筑物二次资源的可用性进行决策。
The linear system of take, make, and waste, has led to deleterious environmental impacts and material use; circular economy strategies may offer benefits. Since the building sector is a major consumer of materials and contributes to many environmental impacts, it is a prime sector to be examined for the implementation of circular economy strategies. Understanding where and what materials are available due to renovation and demolition/deconstruction is lacking in the U.S. Thus, implementation of circular economy strategies like reuse in buildings will be incremental at best. Material stock and flow analysis can be used to understand baselines via accumulated materials and the material flow of buildings. In this study, we developed a bottom-up model using aspects of our previously developed urban building energy model to analyze the accumulated and renovation flow of specific materials in commercial buildings. We focused on renovation as this area was identified as a gap in the literature. The photogrammetry and image processing techniques in this paper provided the opportunity of using actual physical attributes of buildings instead of assumptions, which improved the accuracy of the bottom-up model. The results showed that concrete (37%), brick (30%), and minerals (17%) comprised most of the accumulated materials. Also, there was notable differences in the distribution of materials in different components. Brick had the highest mass in exterior walls; whereas, the largest mass-based quantities in roofs and floors were insulation and minerals, respectively. Brick followed by minerals and concrete had the largest share of renovation flow during 2020 and 2030. These outcomes aid policy makers and businesses in decision-making regarding the availability of secondary resources from buildings.