For that reason, depending on the material characteristics and context however, waste prevention and component reuse are generally preferred over material recycling, biodegradation and heat recovery during incineration.
Parallel to this material oriented perspective, other perspectives are developed. The aim in the circular economy, for example, is “to keep components circulating at the highest utility at all times” (McArthur, 2012). However, maintaining the material oriented perspective of BAMB, the related terms below are defined independent from a component’s function.
Correspondingly, an alternative term for material loops’ is ‘circular material flows’. To avoid confusion, it is proposed to use the term ‘cycle’ only in relation to ‘life cycle’ as discussed in regard of the definition of ‘circular building assessment’. Several of the life cycle stages that include or foster material loops are nevertheless presented here as related terms.
Waste: a building part or material that is no longer valuable and therefore eliminated. If the value of building parts and materials is maintained, it could be expected they will be part of a material loop.
Reuse: using building parts again without remanufacturing them. Lighter processing, such as cleaning or repair, or disassembly and reconstruction might however be required to realise the materials’ loop.
Recycling, up∼, down∼: using building parts’ materials again, involving their remanufacturing and resulting in an increased economic or cultural value, i.e. ‘upcycling’, or decreased value, i.e. ‘downcycling’.
--BAMB - Buildings As Material Banks 08:11, 15 Aug 2018 (BST)
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