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Modelling circular economy action impacts in the building sector on the EU cement industry

: Rehfeldt, Matthias; Herbst, Andrea; Porteron, Samy

Fulltext urn:nbn:de:0011-n-6058727 (1.5 MByte PDF)
MD5 Fingerprint: 64b54347dbc5c3a618076e1bbf52ab2d
Created on: 27.10.2020

European Council for an Energy-Efficient Economy -ECEEE-, Stockholm:
Industrial Efficiency 2020 - Decarbonise Industry! eceee Industrial Summer Study 2020. Proceedings : 14. - 17. September 2020, Chalmers Lindholmen Conference Centre, Gothenburg, Sweden; Digital Event
Stockholm: ECEEE, 2020
ISBN: 978-91-983878-6-5
ISBN: 978-91-983878-7-2
European Council for an Energy-Efficient Economy (ECEEE Industrial Summer Study) <2020, Online>
Conference Paper, Electronic Publication
Fraunhofer ISI ()
Circular economy; Cement; Decarbonisation; Modelling

The 2015 Paris Agreement aims to strengthen the global response to the threat of climate change by keeping global temperature rise in this century well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase even further to 1.5 degrees Celsius. The industrial sector in particular will need a bundle of technologies and measures that go beyond energy efficiency and fuel switching. In this context, circular economy is an important pillar in reducing the demand for energy-intensive raw materials and gains momentum in the political debate. This contribution to the eceee Industrial Efficiency 2020 presents the potential impacts of selected circular economy actions in the building sector on cement production and CO2-emissions in the cement industry. The analysis is based on a bottom-up material flow modelling approach. The assessed measures include actions along the whole value chain. Some examples are the reduction of over specification, material substitution (e.g. new binders, wood use), extending buildings’ lifetime, design for disassembly, etc. Results show that circularity measures could substantially contribute to the objective of a CO2-neutral economy (not taking into account rebound effects). The overall greenhouse gas reduction potential is calculated as 58 % compared to a 2015 base case. In addition, the individual actions’ contribution is presented. We conclude that effort along the entire value chain is necessary to enable the construction sector to contribute to European climate policy.