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REBUILD - REgenerative BUILDings and products for a circular economy

重建 - 循环经济的再生建筑和产品

基本信息

批准号：
EP/P008917/1
负责人：
Peter Hopkinson
金额：
$ 131.82万
依托单位：
University of Bradford
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FP008917%2F1
关键词：
REBUILD REgenerative BUILDings products circular

项目摘要

In a circular economy value is created by keeping products and materials 'in flow' through effective recirculation and re-use to optimise their highest economic potential and minimise the use of virgin materials and external environmental costs. New construction and existing building stocks present the highest potential for circular economy innovation, value retention and creation opportunities, estimated to be worth approximately Euro 450 - 600M p.a. Innovation in the reclamation of currently hard to re-use building products - concrete, steel, brick, from end of service life (EOSL) buildings and their remanufacture into new modular products for new builds which would then be designed for future deconstruction, is therefore a major economic opportunity. REBUILD proposes that materials are directly reused and remanufactured into new builds with minimal re-processing. The project proposes a new circular economy system to address key barriers in the current linear approaches to demolition and new building construction, and build capabilities and tools to create significant new value by the early adoption of novel technologies, high value remanufacture, new system arrangements and the scaling up good practices. The magnitude of the opportunity is considerable. Existing buildings were not designed for adaptation, dis-assembly, or high value reuse. Therefore, the current option is to demolish them when they reach EOSL. In the UK approximately 50,000 buildings are demolished each year generating 45Mt of wastes, the majority of this is concrete and masonry, brick and steel. Of this 45Mt, only a small percentage is reclaimed, mostly for heritage products or easily demountable structures such as steel sections from portal frames. EOSL buildings are treated as costs to be minimised with speed of clearance commercially critical and a subsequent major loss of embedded carbon, energy, materials and potential value.For circularity to become mainstream in the building construction industry, it is imperative that barriers to reuse hard to deconstruct buildings, including using cement mortar based masonry, reinforced concrete, steel-concrete composite structures, which account for the vast majority of UK construction tonnage and cost, must be removed. REBUILD starts the process of converting all current building at the end of their first life and future buildings into material and product banks allowing the retention of high value materials and products for future repeat reuse. The cost of transport and storage means that repair, remanufacture and reuse of products to be commercially successful will need to be regional/local scale. To create demand acceptance for re-used products REBUILD testing processes are designed to demonstrate industry standards of quality assurance of technical performance. Creating demand requires a system re-design and co-ordination to integrate all the activities in the value chain including construction and manufacture, demolition and other key activities (financing, public procurement, planning), in new ways to collaborate to unlock and share value from product re-use. This integration is likely to be optimal at city scale within a circular economy regional hub. This system design will be created and modelled with our industrial stakeholders. The project will quantify, measure and evaluate the magnitude of value creation and product re-use for different system configurations and scenarios against a Business as Usual (BAU) reference case. Continual interactions with the industrial stakeholder group, and through their networks the wider construction industry, will make sure that the direction of our project stays close to industrial needs and the outcomes of our research are communicated to the industry in the most effective way.

在循环经济中，价值是通过有效的再循环和再利用保持产品和材料的“流动”来创造的，以优化其最大的经济潜力并最大限度地减少原始材料的使用和外部环境成本。新建建筑和现有建筑存量在循环经济创新、保值和创造机会方面具有最大潜力，估计每年价值约 450 - 6 亿欧元。因此，对目前难以再利用的建筑产品（EOSL）中的混凝土、钢材、砖块进行回收创新，并将其重新制造成用于新建筑的新模块化产品，然后为未来的解构进行设计，这是一个重大的经济机会。 REBUILD 提议直接重复使用材料并以最少的再加工将材料重新制造成新建筑。该项目提出了一个新的循环经济体系，以解决当前线性拆除和新建筑建设方法中的主要障碍，并建立能力和工具，通过早期采用新技术、高价值再制造、新系统安排和扩大良好实践来创造重大新价值。机会是巨大的。现有建筑并非为改造、拆卸或高价值再利用而设计。因此，当前的选择是在达到 EOSL 时拆除它们。在英国，每年大约有 50,000 座建筑物被拆除，产生 45 吨废物，其中大部分是混凝土和砖石、砖块和钢材。在这 45 公吨中，只有一小部分被回收，主要用于遗产产品或易于拆卸的结构，例如门式框架的钢型材。 EOSL 建筑被视为成本最小化，商业通关速度至关重要，随之而来的是嵌入碳、能源、材料和潜在价值的重大损失。为了使循环性成为建筑行业的主流，必须消除难以解构建筑的再利用障碍，包括使用水泥砂浆基砌体、钢筋混凝土、钢-混凝土复合结构，这些结构占英国建筑的绝大多数吨位和成本，必须被删除。 REBUILD 开始将所有当前建筑在其第一寿命结束时和未来建筑转变为材料和产品库，从而保留高价值材料和产品以供将来重复使用。运输和储存成本意味着产品的维修、再制造和再利用要想在商业上取得成功，就需要在区域/当地规模上进行。为了满足重复使用产品的需求，REBUILD 测试流程旨在证明技术性能质量保证的行业标准。创造需求需要重新设计和协调系统，以整合价值链中的所有活动，包括建筑和制造、拆除和其他关键活动（融资、公共采购、规划），以新的方式进行协作，释放和分享产品再利用的价值。这种整合可能在循环经济区域中心内的城市规模上达到最佳效果。该系统设计将与我们的工业利益相关者一起创建和建模。该项目将根据正常营业 (BAU) 参考案例，量化、衡量和评估不同系统配置和场景的价值创造和产品重用程度。与行业利益相关者群体的持续互动，并通过他们的网络与更广泛的建筑行业进行互动，将确保我们的项目方向紧贴行业需求，并以最有效的方式向行业传达我们的研究成果。

项目成果

期刊论文数量（6）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Developing advanced techniques to reclaim existing end of service life (EoSL) bricks - An assessment of reuse technical viability

开发先进技术来回收现有的使用寿命结束 (EoSL) 砖 - 评估再利用技术可行性

DOI：
10.1016/j.dibe.2020.100006
发表时间：
2020
期刊：
Developments in the Built Environment
影响因子：
8.2
作者：
Zhou K
通讯作者：
Zhou K

Estimation of structural steel and concrete stocks and flows at urban scale-towards a prospective circular economy

DOI：
10.1016/j.resconrec.2021.105821
发表时间：
2021-08-12
期刊：
RESOURCES CONSERVATION AND RECYCLING
影响因子：
13.2
作者：
Ajayebi, Atta;Hopkinson, Peter;Wang, Yong
通讯作者：
Wang, Yong

Recovery and reuse of structural products from end-of-life buildings

DOI：
10.1680/jensu.18.00007
发表时间：
2019-04
期刊：
Proceedings of the Institution of Civil Engineers - Engineering Sustainability
影响因子：
0
作者：
P. Hopkinson;Hanning Chen;Kan Zhou;Yong C. Wang;D. Lam
通讯作者：
P. Hopkinson;Hanning Chen;Kan Zhou;Yong C. Wang;D. Lam

Spatiotemporal model to quantify stocks of building structural products for a prospective circular economy