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Economic and environmental life cycle perspectives on two engineered wood products: comparison of LVL and GLT construction materials

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Abstract

The embodied carbon of building materials and the energy consumed during construction have a significant impact on the environmental credentials of buildings. The structural systems of a building present opportunities to reduce environmental emissions and energy. In this regard, mass timber materials have considerable potential as sustainable materials over other alternatives such as steel and concrete. The aim of this investigation was to compare the environment impact, energy consumption, and life cycle cost (LCC) of different wood-based materials in identical single-story residential buildings. The materials compared are laminated veneer lumber (LVL) and glued laminated timber (GLT). GLT has less global warming potential (GWP), ozone layer depletion (OLD), and land use (LU), respectively, by 29%, 37%, and 35% than LVL. Conversely, LVL generally has lower terrestrial acidification potential (TAP), human toxicity potential (HTP), and fossil depletion potential (FDP), respectively, by 30%, 17%, and 27%. The comparative outcomes revealed that using LVL reduces embodied energy by 41%. To identify which of these materials is the best alternative, various environmental categories, embodied energy, and cost criteria require further analysis. Therefore, the multi-criteria decision-making (MCDM) method has been applied to enable robust decision-making. The outcome showed that LVL manufacturing using softwood presents the most sustainable choice. These research findings contribute to the body of knowledge about the use of mass timber in construction.

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The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.

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All authors contributed to the study conception and design. Data collection and software analysis were performed by Ali Tighnavard Balasbaneh, Willy Sher, David Yeoh, and Mohd Norazam Yasin. The first draft of the manuscript was written by Ali Tighnavard Balasbaneh; all authors commented on previous versions of the manuscript. As corresponding author, I confirm that the manuscript has been read and approved for submission by all the authors.

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Correspondence to Ali Tighnavard Balasbaneh.

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Appendix

Appendix

Table 9 The normalization of the decision matrix
Table 10 Relative importance

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Balasbaneh, A.T., Sher, W., Yeoh, D. et al. Economic and environmental life cycle perspectives on two engineered wood products: comparison of LVL and GLT construction materials. Environ Sci Pollut Res 30, 26964–26981 (2023). https://doi.org/10.1007/s11356-022-24079-1

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  • DOI: https://doi.org/10.1007/s11356-022-24079-1

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