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Material Diets for Climate-Neutral Construction
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DOI：10.1021/acs.est.1c05895.png)
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摘要
En 中文
The climate crisis is urging us to act fast. Buildings are a keyleverage point in reducing greenhouse gas (GHG) emissions, but theembodied emissions related to their construction often remain the hiddenchallenge of any ambitious policy. Therefore, in this paper, we exploredmaterial GHG neutralization where herbaceous biobased insulation materialswith negative net-global warming potentials (GWPs) were used tocompensate for building elements that necessarily release GHGs. Differentmaterial diets, as well as different building typologies, were modeled to assessthe consequences in terms of biobased insulation requirements to reachclimate neutrality. Our results show that climate-neutral construction can bebuilt with sufficient energy performance to fulfill current standards and withbuilding component thicknesses within a range of 1.05-0.58 m when timber- and bamboo-based construction is chosen. Concrete-based ones require insulation sizes that are too large and heavy to be supported by the dimensioned structures or accepted by urbanregulations. Moreover, a time horizon of 20 years is more appropriate for assessing the contribution of material shifts to biobasedmaterials in the transition period before 2050. This paper demonstrates that this is technically feasible and that climate neutrality inthe construction sector just depends on the future that we choos
Keyword:
climate-neutral construction
embodied GHG
fast-growing biobased material
GWPbio
material GHG compensation
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11.3
论文数:
4.3W
被引数:
26.0W
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