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2022-07-12Subject
620 Engineering Ökologischer FußabdruckBauwirtschaftNachhaltigkeitStahlbetonbauCarbonbetonBaustoffKohlenstofffaserUmweltbilanzDIN-EN-ISO-NormKostensenkungMetadata
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Aufsatz
Environmental Assessment of Carbon Concrete Based on Life-Cycle Wide Climate, Material, Energy and Water Footprints
Abstract
The construction industry contributes a major share to global warming and resource consumption. Steel-reinforced concrete (SC) is the world’s most important building material, with over 100 million cubic meters used per year in Germany. In order to achieve a resource-efficient and climate-friendly construction sector, innovative technologies and the substitution of materials are required. Carbon concrete (CC) is a composite material made of concrete and a reinforcement of carbon fibers. Due to the non-rusting and high-strength carbon reinforcement, a much longer life-time can be expected than with today’s designs. In addition, the tensile strength of carbon fibers is about six times higher than that of steel, so CC can be designed with a relatively lower concrete content, thus saving cement and aggregates. This research analyzes and compares SC with CC over its entire life-cycle with regard to its climate, material, energy, and water footprints. The assessment is done on material and building level. The results show that the production phase contributes majorly to the environmental impacts. The reinforcements made from rebar steel or carbon fibers make a significant contribution, in particular to the climate, energy, and water footprint. The material footprint is mainly determined by cement and aggregates production. The comparison on the building level, using a pedestrian bridge as an example, shows that the footprints of the CC bridge are lower compared to the SC bridge. The highest saving of 64% is in the material footprint. The water footprint is reduced by 46% and the energy and climate footprint by 26 to 27%. The production of carbon fibers makes a significant contribution of 37% to the climate footprint.
Citation
In: Materials Volume 15 / Issue 14 (2022-07-12) , S. ; eissn:1996-1944Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-202208086589,
author={Mostert, Clemens and Bock, Jannik and Sameer, Husam and Bringezu, Stefan},
title={Environmental Assessment of Carbon Concrete Based on Life-Cycle Wide Climate, Material, Energy and Water Footprints},
journal={Materials},
year={2022}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2022$n2022 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/14035 3000 Mostert, Clemens 3010 Bock, Jannik 3010 Sameer, Husam 3010 Bringezu, Stefan 4000 Environmental Assessment of Carbon Concrete Based on Life-Cycle Wide Climate, Material, Energy and Water Footprints / Mostert, Clemens 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/14035=x R 4204 \$dAufsatz 4170 5550 {{Ökologischer Fußabdruck}} 5550 {{Bauwirtschaft}} 5550 {{Nachhaltigkeit}} 5550 {{Stahlbetonbau}} 5550 {{Carbonbeton}} 5550 {{Baustoff}} 5550 {{Kohlenstofffaser}} 5550 {{Umweltbilanz}} 5550 {{DIN-EN-ISO-Norm}} 5550 {{Kostensenkung}} 7136 ##0##http://hdl.handle.net/123456789/14035
2022-08-08T13:07:29Z 2022-08-08T13:07:29Z 2022-07-12 doi:10.17170/kobra-202208086589 http://hdl.handle.net/123456789/14035 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ concrete carbon fibers rebar steel lightweight constructions resource footprints life cycle assessment 620 Environmental Assessment of Carbon Concrete Based on Life-Cycle Wide Climate, Material, Energy and Water Footprints Aufsatz The construction industry contributes a major share to global warming and resource consumption. Steel-reinforced concrete (SC) is the world’s most important building material, with over 100 million cubic meters used per year in Germany. In order to achieve a resource-efficient and climate-friendly construction sector, innovative technologies and the substitution of materials are required. Carbon concrete (CC) is a composite material made of concrete and a reinforcement of carbon fibers. Due to the non-rusting and high-strength carbon reinforcement, a much longer life-time can be expected than with today’s designs. In addition, the tensile strength of carbon fibers is about six times higher than that of steel, so CC can be designed with a relatively lower concrete content, thus saving cement and aggregates. This research analyzes and compares SC with CC over its entire life-cycle with regard to its climate, material, energy, and water footprints. The assessment is done on material and building level. The results show that the production phase contributes majorly to the environmental impacts. The reinforcements made from rebar steel or carbon fibers make a significant contribution, in particular to the climate, energy, and water footprint. The material footprint is mainly determined by cement and aggregates production. The comparison on the building level, using a pedestrian bridge as an example, shows that the footprints of the CC bridge are lower compared to the SC bridge. The highest saving of 64% is in the material footprint. The water footprint is reduced by 46% and the energy and climate footprint by 26 to 27%. The production of carbon fibers makes a significant contribution of 37% to the climate footprint. open access Mostert, Clemens Bock, Jannik Sameer, Husam Bringezu, Stefan doi:10.3390/ma15144855 Ökologischer Fußabdruck Bauwirtschaft Nachhaltigkeit Stahlbetonbau Carbonbeton Baustoff Kohlenstofffaser Umweltbilanz DIN-EN-ISO-Norm Kostensenkung publishedVersion eissn:1996-1944 Issue 14 Materials Volume 15 false 4855
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