Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Life cycle assessment of 3D printing geo-polymer concrete: Anex-antestudy
Three-dimensional(3D)printingandgeo-polymersaretwoenvironmentallyorientedinnovations in concrete manufacturing. The 3D printing of concrete components aims to reduce raw mate- rialconsumptionandwastegeneration.Geo-polymerisbeingdevelopedtoreplaceordinaryPort- land cement and reduce the carbon footprint of the binder in the concrete. The environmental performance of the combined use of the two innovations is evaluated through an ex-ante life cycle assessment (LCA). First, an attributional LCA was implemented, using data collected from the manufacturer to identify the hotspots for environmental improvements. Then, scaled-up sce- narios were built in collaboration with the company stakeholder. These scenarios were compared withtheexistingproductionsystemtounderstandthepotentialadvantages/disadvantagesofthe innovativesystemandtoidentifythepotentialdirectionsforimprovement. Theresultsindicatethat3Dprintingcanpotentiallyleadtowastereduction.However,depending on its recipe, geo-polymer likely has higher environmental impacts than ordinary concrete. The ex-ante LCAsuggests that after step-by-step improvements inthe productionandtransportation of raw materials, 3D printing geo-polymer concrete is able to reduce the carbon footprint of con- cretecomponents,whileitdoesstillperformworseonimpactcategories,suchasdepletionofabi- otic resources and stratospheric ozone depletion. We found that the most effective way to lower the environmental impacts of 3D concrete is to reduce silicate in the recipe of the geo-polymer. This approach is, however, challenging to realize by the company due to the locked-in effect of the previous innovation investment. The case study shows that to support technological innova- tionex-anteLCAhastobeimplementedasearlyaspossibleininnovationtoallowformaintaining technicalflexibilityandimprovingontheidentifiedhotspots.
Life cycle assessment of 3D printing geo-polymer concrete: Anex-antestudy
Three-dimensional(3D)printingandgeo-polymersaretwoenvironmentallyorientedinnovations in concrete manufacturing. The 3D printing of concrete components aims to reduce raw mate- rialconsumptionandwastegeneration.Geo-polymerisbeingdevelopedtoreplaceordinaryPort- land cement and reduce the carbon footprint of the binder in the concrete. The environmental performance of the combined use of the two innovations is evaluated through an ex-ante life cycle assessment (LCA). First, an attributional LCA was implemented, using data collected from the manufacturer to identify the hotspots for environmental improvements. Then, scaled-up sce- narios were built in collaboration with the company stakeholder. These scenarios were compared withtheexistingproductionsystemtounderstandthepotentialadvantages/disadvantagesofthe innovativesystemandtoidentifythepotentialdirectionsforimprovement. Theresultsindicatethat3Dprintingcanpotentiallyleadtowastereduction.However,depending on its recipe, geo-polymer likely has higher environmental impacts than ordinary concrete. The ex-ante LCAsuggests that after step-by-step improvements inthe productionandtransportation of raw materials, 3D printing geo-polymer concrete is able to reduce the carbon footprint of con- cretecomponents,whileitdoesstillperformworseonimpactcategories,suchasdepletionofabi- otic resources and stratospheric ozone depletion. We found that the most effective way to lower the environmental impacts of 3D concrete is to reduce silicate in the recipe of the geo-polymer. This approach is, however, challenging to realize by the company due to the locked-in effect of the previous innovation investment. The case study shows that to support technological innova- tionex-anteLCAhastobeimplementedasearlyaspossibleininnovationtoallowformaintaining technicalflexibilityandimprovingontheidentifiedhotspots.
Life cycle assessment of 3D printing geo-polymer concrete: Anex-antestudy
Yue Yao (Autor:in) / Mingming Hu (Autor:in) / Francesco Di Maio (Autor:in) / Stefano Cucurachi (Autor:in)
26.05.2021
oai:zenodo.org:4808147
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
710
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