Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/76601
Title: Assessment of CO2 emissions reduction in high-rise concrete office buildings using different material-use options
Authors: Chau, CK 
Hui, WK 
Ng, WY 
Leung, TM 
Xu, JM 
Keywords: High-rise concrete office buildings
Life cycle carbon emissions
Material-use options
Issue Date: 2016
Publisher: Butterworth-Heinemann (an imprint of Elsevier)
Source: In A Nazari & JG Sanjayan (Eds.), Handbook of low carbon concrete, Chapter 3, p. 39-61. Tokyo: Butterworth-Heinemann (an imprint of Elsevier), 2016 How to cite?
Abstract: This study applied the Monte Carlo method to generate probabilistic distributions for describing the CO2 footprint of the superstructure of a high-rise concrete office building. The distribution profile was constructed with the material-use data collected from 13 high-rise concrete office buildings in Hong Kong. Results indicated that the average carbon footprint of the superstructure of an office building was 215.1kg CO2/m22. External walls and upper-floor construction had the highest CO2 footprint, followed by suspended ceilings and finishes. These three elements altogether accounted for an average of 84.2% of the CO2 footprint associated with the superstructure. Also, this study evaluated the emissions-reduction impacts of five different material-use options over a 60-year lifespan. Among all the studied options, the most effective option was to maintain 15-30% of the existing structural and nonstructural building elements as this could reduce the CO2 footprint by 17.3%. Diverting construction wastes to recycling could reduce the CO2 footprint by 5.9%. Reusing resources and importing regional materials could only reduce the CO2 footprint by 3.2% and 3.1%, respectively. In contrast, the CO2 footprint would be increased by 5% if offsite fabricated materials were used in facades, slabs, and partition walls.
URI: http://hdl.handle.net/10397/76601
ISBN: 9780128045404
9780128045244
DOI: 10.1016/B978-0-12-804524-4.00003-8
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