Person: Mayer, Matan
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Matan
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Mayer
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IE University
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IE School of Architecture & Desing
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Architecture and Design
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Publication Data granularity for life cycle modelling at an urban scale(Taylor & Francis, 2020-07-03) Bechthold, Martin; Mayer, Matan; https://ror.org/02jjdwm75Calculating emissions and related environmental impacts for buildings is typically a data-heavy and labour-intensive task. Widely used life cycle assessment (LCA) standards require meticulous modelling of multiple processes for each part within a product or a subassembly. This level of detailing demands time-consuming manual modelling and essentially renders full LCA of entire city blocks unrealistic. Within this context, this paper investigates how LCA results of modelling processes which involve a range of automated input data sources compare to those resulting from a highly detailed base case model. Findings show that models generated from data gathered from Google Street View and the U.S. Census produce the closest results to the base case model, with the lowest deviations occurring in embodied energy (0.06−6.0%) and global warming potential (0.7−4.8%) results. These findings imply that data with lower granularity can lead to precise LCA results, depending on the inventory and impact categories considered.Publication Economic indicators for material recovery estimation(Elsevier, 2021-07-31) Mayer, Matan; https://ror.org/02jjdwm75Material recovery characterization is a seemingly simple task: determining whether given waste is fit or unfit for recycling. A closer look, however, reveals a subtler and more complex gradient between the two. There are multiple levels of material recovery solutions below recycling, such as landfilling, incineration, and downcycling, as well as multiple levels above it, such as upcycling, remanufacturing, and reuse. Determining material recovery potential of a given material or product on this continuum depends on a number of variables, including maturity of recycling technologies, geographical proximity, scalability and existing marketplaces. For the most part, these and other variables do not easily lend themselves to precise quantitative assessment.Within this context, this chapter explores the viability of estimating material recovery potential based on a single indicator: market price. By comparing the drop and rise in market price of products along the recovery chain from the point of sale of a new item, through remanufacturing and recycling operations to eventual disposal, one can conclude regarding a range of influencing factors, including the quality of return infrastructure, availability of developed recycling methods, market demand, and more. The chapter presents the methodological foundations of this approach and discusses applications in practice in the construction industry. Additionally, the chapter proposes multiple extensions to this index that apply the developed methodology to a range of indicator domains.Publication In Review: Assessing Mass Timber and the Circular Economy(Taylor & Francis, 2023-07-03) Kobelt, Pete; Mayer, Matan; https://ror.org/02jjdwm75This article has no abstract.Publication Circularity at Scale(Taylor & Francis, 2023-07-03) Mayer, Matan; https://ror.org/02jjdwm75This article has no abstract.Publication Adapting residential envelope assemblies for full circularity(IOP Publishing Ltd, 2021) Mayer, Matan; https://ror.org/02jjdwm75Residential external wall assemblies are among the key contributors to embodied carbon emissions in the building industry. Their design,however,is still largely oriented towards linear consumption trajectories of extraction-use-waste. Within this context,this paper investigates how established material recovery potential assessment metrics could be used to inform design decisions aimed at improving circularity in buildings. A redesign of a typical timber frame assembly is presented and its material recovery performance is compared to standard systems. Results show a 35%-47% improvement in material recovery potential. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 Licence.Publication Material recovery certification for construction workers(Ubiquity press, 2020-09-07) Mayer, Matan; https://ror.org/02jjdwm75Low and zero-carbon building certification programmes typically focus on emissions caused by building operation and/or material extraction and manufacturing activities. However, ‘end-of-life’ issues involving the reuse, remanufacture or recycling potential of embodied energy-intensive components are often overlooked. As a result, training and certification in this field tends to be diagnostic and observational rather than proactive and anticipatory. To ensure that vocational workers have appropriate capabilities to recycle or reuse building components fully, a training and certification programme is necessary that focuses on end-of-life material recovery potential. A framework is presented for recovery of building products and the certification system for workers. The system rates recovery potential at both the material and assembly levels through a series of evaluation criteria. This assessment is translated into a product labelling scheme as well as a training and certification programme for vocation workers involved in the production, supply and installation chains of recovery-oriented products.