Affiliation:
1. Sumitomo Mitsui Construction, Tokyo, Japan
Abstract
<p>Cement used in structural concrete accounts for 60% of all cement. Thus, the amount of CO2 emission by cement in structural concrete in a year is about 5% of the amount emitted by mankind. LCA of structural concrete should consider not only the materials at the product stage but also the maintenance phase at the use stage after construction. A rough indicator is presented to grasp the CO2 emissions of structural concrete. And low-carbon technologies currently in use is introduced. Then the need for multi-cycle structural concrete with a circular economy is presented. Moreover, it is estimated that CO2 emissions due to disasters in the use stage could be enormous. The carbon neutrality of structural concrete is not a risk but an opportunity for us.</p>
Publisher
International Association for Bridge and Structural Engineering (IABSE)
Reference14 articles.
1. Favier A., De Wolf C., Scrivener K., Habert G.A. Sustainable future for the European cement and concrete industry. ETH, EPFL. 2018.
2. Impact of carbon neutrality on structural concrete—Not a risk but an opportunity;Akio Kasuga;Structural Concrete
3. The Carbon Footprint of Bridges;David Collings;Structural Engineering International
4. Arifa Z., Kasuga A. LCA of a challenging low carbon ultra-high durability non-metallic bridge. Proceedings of the fib Congress, Oslo. pp 2100-2109, 2022
5. Maldonado S., Bowman M. Life-Cycle Cost Analysis for Short and Medium-Span Bridges. Joint Transportation Research Program, Technical Report, Indiana Department of Transportation and Purdue University, SPR- 3914. Report Number: FHWA/IN/JTRP- 2019/09.