Salvaging building materials in a circular economy: A BIM-based whole-life performance estimator

Akanbi, Lukman; Oyedele, Lukumon O.; Akinadé, Olúgbénga O.; Ajayi, Anuoluwapo O.; Delgado, Manuel Davila; Bilal, Muhammad; Bello, Sururah A.

doi:10.1016/j.resconrec.2017.10.026

Cited by 282 publications

(213 citation statements)

References 31 publications

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“…The circular economy brought an emerging concept which restores and regenerates the material by an efficient design (Zhong and Pearce, 2018). This concept aims to protect products and materials at their highest effective utility while minimising negative impacts (Akanbi et al, 2018). In a sustainable society, the recovery of materials and energy by following circular economy is a challenging task (Kirchherr et al, 2017), (Hoogmartens et al, 2018).…”

Section: Circular Economy and Global Challengesmentioning

confidence: 99%

A critical review on recycling of end-of-life carbon fibre/glass fibre reinforced composites waste using pyrolysis towards a circular economy

Naqvi

Prabhakara

Bramer

et al. 2018

Resources, Conservation and Recycling

310

153

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The rapid utilization of carbon fibre reinforced composite (CFRC) and glass fibre reinforced composite (GFRC) in main sectors, such as automobile, aerospace, wind turbines, boats and sport parts, has gained much attention because of its high strength, light weight and impressive mechanical properties. Currently, the increasing amount and handling of composite waste at their end-of-life (EoL) has a negative impact on resources conservation and the environment. Pyrolysis, a two-step process, appeared as most viable process to recover not only valuable materials but also produce fuel and chemicals. However, the testing facilities and optimized operation of composite waste in pyrolysis processes to produce materials with low energy consumption and acceptable mechanical properties are still under development and discussion before commercialization. The aim of this article is to review the studies on CFRC/GFRC recycling via pyrolysis processes and highlight their technical challenges and re-use possibilities in high performance composites. The forthcoming commercialization challenges and respective market potential to recyclates using the pyrolysis process will be addressed. This study will also introduce the strong connection between recycling and re-usability of fibres which would help to explain the concept of circular economy and cradle-to-cradle approach. Finally, based on updated studies and critical analysis, research gaps in the recycling treatments of fibrous composite waste using pyrolysis processes are discussed with recommendations.

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Section: Circular Economy and Global Challengesmentioning

confidence: 99%

A critical review on recycling of end-of-life carbon fibre/glass fibre reinforced composites waste using pyrolysis towards a circular economy

Naqvi

Prabhakara

Bramer

et al. 2018

Resources, Conservation and Recycling

310

153

View full text Add to dashboard Cite

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“…This score emphasizes criteria to facilitate deconstruction ability but does not guide designers with methodology. The residual performances of building elements are still insufficiently assessed and Akanbi et al [45] provide additional elements with a BIM-based whole-life performance estimator (BWPE), which takes into account the aging criteria of the materials to allow their reuse.…”

Section: Use Of Building Information Modeling (Bim) For Reusementioning

confidence: 99%

A BIM-Based Framework and Databank for Reusing Load-Bearing Structural Elements

et al. 2020

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In a context of intense environmental pressure where the construction sector has the greatest impact on several indicators, the reuse of load-bearing elements is the most promising by avoiding the production of waste, preserving natural resources and reducing greenhouse gas emissions by decreasing embodied energy. This study proposes a methodology based on a chain of tools to enable structural engineers to anticipate future reuse. This methodology describes the design of reversible assemblies, the addition of complementary information in the building information modeling (BIM), reinforced traceability, and the development of a material bank. At the same time, controlling the environmental impacts of reuse is planned by carrying out a life cycle assessment (LCA) at all stages of the project. Two scenarios for reuse design are applied with the toolchain proposed. A. "design from a stock" scenario, which leads to 100% of elements being reused, using only elements from stock. B. "design with a stock" scenario, which seeks to integrate as many reused elements available in the stock as possible. The case study of a high-rise building deconstructed to rebuild a medium-rise building demonstrated that the developed toolchain allowed the inclusion of all reuse elements in a new structural calculation model. Sustainability 2020, 12, 3147 2 of 24 the largest exploiters of natural resources [8], accounting for between 40% of the total raw materials consumption [9] and 50% [10].This growing development has repercussions on the emission of GHGs, among other indicators. In France, the construction and building industry is the leading emitter of GHGs [11], i.e., 33% of total GHGs. Several studies confirm this number worldwide [6,12,13]. Kumar Dixit et al. [8] define the embodied energy (EE) and embodied carbon (EC). EE during the construction phase is the amount of energy used for the extraction of raw materials, the production and transport of building components as well as the building construction and end-of-life (EOL). Moreover, EC refers to the associated GHG emissions [3]; the operating energy during the operation phase as energy consumption and associated operational carbon emissions during the use phase of buildings (heating, cooling, etc.). The average value of EE is 50% of the total primary energy demand [14]. The share of operational energy seems to decrease recently (even disappearing in passive or zero energy buildings) with technical progress and, therefore, the share of EE increases [15].Another impact of the construction sector is due to waste generation [5,16]. Most of the literature focuses on waste management, which shows a great interest in reducing the construction and demolition waste (CDW) generated by the construction sector as it represents around 40% of the waste produced [17]. Cai et al. [18] and Lismont et al. [19] explained that in Europe, about 25-30% of the waste result from the building sector amounting to 870 million tons annually and Brütting et al. [3] estimated this share at more than a third ...

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“…The construction sector is one of the biggest contributors of landfill waste in the EU owing to the design flaws in the product. Construction materials (particularly contemporary insulation material) are seldom created for any kind of responsible end-of-life management [38].…”

Section: Value Chain Selectionmentioning

confidence: 99%

Bridging the Gaps for a ‘Circular’ Bioeconomy: Selection Criteria, Bio-Based Value Chain and Stakeholder Mapping

2018

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Bio-products and bio-based value chains have been identified as one of the most promising pathways to attaining a resource-efficient circular economy. Such a "valorization and value-addition" approach incorporates an intricate network of processes and actors, contributing to socioeconomic growth, environmental benefits and technological advances. In the present age of limited time and funding models to achieve ambitious sustainable development targets, whilst mitigating climate change, a systematic approach employing two-tier multi-criteria decision analysis (MCDA) can be useful in supporting the identification of promising bio-based value chains, that are significant to the EU plans for the bio-economy. Their identification is followed by an elaborate mapping of their value chains to visualize/foresee the strengths, weaknesses, opportunities and challenges attributable to those bio-based value chains. To demonstrate this methodology, a systematic review of 12 bio-based value chains, prevalent in the EU, sourcing their starting material from biomass and bio-waste, has been undertaken. The selected value chains are mapped to visualize the linkages and interactions between the different stages, chain actors, employed conversion routes, product application and existing/potential end-of-life options. This approach will help chain-actors, particularly investors and policy-makers, understand the complexities of such multi-actor systems and make informed decisions.

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Salvaging building materials in a circular economy: A BIM-based whole-life performance estimator

Cited by 282 publications

References 31 publications

A critical review on recycling of end-of-life carbon fibre/glass fibre reinforced composites waste using pyrolysis towards a circular economy

A critical review on recycling of end-of-life carbon fibre/glass fibre reinforced composites waste using pyrolysis towards a circular economy

A BIM-Based Framework and Databank for Reusing Load-Bearing Structural Elements

Bridging the Gaps for a ‘Circular’ Bioeconomy: Selection Criteria, Bio-Based Value Chain and Stakeholder Mapping

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