The increasing importance of the embodied emissions in the life cycle of buildings has led to a growing interest in strategies supporting their mitigation. In this paper are presented the environmental impacts of 10 variants of a single-family house assessed with the life cycle assessment (LCA) method. A set of potential technological improvements and strategies are applied at the material level. Their influence at the building level is discussed and the resulting global warming potentials are compared to the COP21 targets for Austrian buildings. Finally, potential trade-offs in 9 other environmental impact categories are explored. The results show that, when incorporating all of the assessed strategies for emission reduction, the embodied greenhouse gas (GHG) emissions could be reduced up to 87% at the material level and 50% at the building level. Carbon capture and storage and the use of bio-based materials are to be credited for the highest share of these reductions. However, there is no version of this building that fulfils the COP21 targets. Other pathways, which do not solely rely on material-related technological improvements, should be investigated. A more radical change of the building industry might even be necessary. Overall, the implementation of the strategies decreased the environmental impacts in almost every impact category, except for freshwater aquatic ecotoxicity.
|Journal||IOP Conference Series: Earth and Environmental Science|
|Publication status||Published - 2022|
|Event||SBE 2022 Berlin D-A-CH Conference: Built Environment within Planetary Boundaries, sbe22 Berlin 2022 - Virtual, Online|
Duration: 20 Sept 2022 → 23 Sept 2022
|Conference||SBE 2022 Berlin D-A-CH Conference: Built Environment within Planetary Boundaries, sbe22 Berlin 2022|
|Period||20/09/2022 → 23/09/2022|
Bibliographical noteFunding Information:
This paper was developed in the course of the ongoing research project “Transition of the procurement process towards Paris compatible public buildings” (ParisBuildings), conducted by the Working Group on Sustainable Construction from the Graz University of Technology and financially supported by the Klima-und Energiefonds, ACRP11 KR18AC0K14693. The analysis and results described in this paper also build upon the “Ökovergleiche” project (see http://www.hausderzukunft.at/results.html/id6530).
© 2022 Institute of Physics Publishing. All rights reserved.
- Future technologies
- Greenhouse gas emissions (GHG)
- Life cycle assessment (LCA)
- Mitigation strategies