Bio-based building products in the Dutch Environmental Database (NMD) : Part 2: Proposal for updated end-of-life lump-sum values for wood based products

In order to stimulate reuse and recycling of building products, expected environmental impact benefits of future reuse and recycling can be credited in the so called module D of the Dutch Environmental Performance of Buildings and civil engineering works Determination Method (Determination Method).-This means that the environmental impact savings associated with the future avoided sourcing and production of virgin materials may be subtracted from the impact of presently applied building products. If no actual collection and recycling system is in place, the Determination Method presents lump-sum values for end-of-life (EoL) scenarios for a wide range (of groups) of products: x% is reused, y% is recycled, z% is incinerated, v% is landfilled, w% is left in the ground. - The current lump-sum values for reuse and recycling of clean wood like beams and planks are 5% and 10%, respectively, and have been in place unchanged for many years. With increasing attention and efforts on sustainability and circular use of materials, however, it is expected that reuse/recycling rates for wood based materials released from buildings and constructions are higher than these current lump-sum values, and may increase further during the coming years. - The objective of this study is to establish updated underpinned lump-sum values for end-of-life scenarios for a number of wood-based building products. - Based on detailed data of a recent study as well as on input from a broad range of experts, two sets of end-of-life scenarios for a selection of wood-based building products have been established: One for current average demolition practices (table 3), and one for current circular demolition practices (table 4). Based on input from a limited number of civil works contractors, a similar and conservative set of end- of-life scenarios has been established for specific types of civil works products (table 6). The results indicate that the scenarios largely differ for different types of civil works wood waste streams, which are currently combined as one waste stream in the NMD end-of-life scenario scheme. -These 3 datasets (tables 3, 4 and 6) have been proposed to be used as lump-sum end-of-life scenarios for the indicated wood-based products for mentioned applications and indicated demolition (buildings) and extraction (civil works) practices.

Bibliographic Details

Main Authors:	van den Oever, M., Weterings, Helmer, de Munck, Eric
Format:	External research report biblioteca
Language:	English
Published:	Wageningen Food & Biobased Research
Subjects:	Life Science,
Online Access:	https://research.wur.nl/en/publications/bio-based-building-products-in-the-dutch-environmental-database-n-2
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