Spatiotemporal model to quantify stocks of building structural products for a prospective circular economy
Spatiotemporal model to quantify stocks of building structural products for a prospective circular economy
复制标题
DOI：
10.1016/j.resconrec.2020.105026
复制
发表时间：
2020-11
期刊：
影响因子：
--
通讯作者：
Atta Ajayebi;P. Hopkinson;Kan Zhou;D. Lam;Hanning Chen;Yong C. Wang
中科院分区：
文献类型：
--
作者：
Atta Ajayebi;P. Hopkinson;Kan Zhou;D. Lam;Hanning Chen;Yong C. Wang
建筑行业消耗大量资源，产生大量废物，并产生许多负面环境影响，包括碳排放。这些问题是线性价值链的特征。相比之下，建筑施工的循环经济方法有可能缓解这三个问题。实现这一目标的一种方法是将正在使用的建筑存量作为未来再利用的产品储存库，有时被称为城市采矿。这种转变的一个关键阶段是能够量化建筑材料的库存，并根据其位置，年龄，类型和隐含碳等标准评估其作为产品的直接再利用潜力。大多数建筑存量的研究都集中在生产材料的总量，而不考虑评估未来再利用的潜在价值流所需的信息。本文提出了一个集成外部几何和建造历史的建筑结构产品时空映射框架。为了证明其能力，对建筑物外墙内的粘土砖库存进行了评估，其中指定了六种类型的建筑物和四种类型的砖。尺寸，重量，年龄和体现碳的材料估计的案例研究的北方英格兰的三个城市地区：曼彻斯特，利兹和布拉德福德，并在空间上映射布拉德福德市的结果。本文提供了第一个系统和全面的区域模型，以评估未来城市采矿和建筑施工系统的循环经济的建筑结构产品的库存。
The building construction sector consumes significant quantities of resources, generates high levels of waste and creates many negative environmental impacts including carbon emissions. These problems are characteristic of linear value chains. In contrast, a circular economy approach to building construction has the potential to moderate these three problems. One way this can be achieved is to enable in-use building stocks as a repository of products for future reuse, sometimes referred to as urban mining. A key stage in such a shift is to be able to quantify stocks of construction materials and assess their direct reuse potential as products against criteria such as their location, age, type, and embodied carbon. The majority of studies of building stocks have focused on producing aggregated quantities of materials, regardless of the required information for assessing the potential value streams of future reuse. In this paper, a framework for spatiotemporal mapping of building structural products integrating external geometries and construction history is presented. To demonstrate its capacity, the stocks of clay bricks within the external walls of buildings are assessed where six types of buildings and four types of bricks are specified. Dimensions, weights, ages and embodied carbon of materials are estimated for case studies of three urban regions in Northern England: Manchester, Leeds and Bradford, and the results are spatially mapped for the city of Bradford. The paper provides the first systematic and comprehensive area-wide model to evaluate stocks of building structural products for future urban mining and circular economy of building construction systems.