Comparing greenhouse gas emissions of precast in-situ and conventional construction methods

Ji, Y, Li, K, Liu, G, Shrestha, Asheem and Jing, J 2016, Comparing greenhouse gas emissions of precast in-situ and conventional construction methods, Journal of cleaner production, vol. 173, pp. 124-134, doi: 10.1016/j.jclepro.2016.07.143.

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Title Comparing greenhouse gas emissions of precast in-situ and conventional construction methods
Author(s) Ji, Y
Li, K
Liu, G
Shrestha, AsheemORCID iD for Shrestha, Asheem
Jing, J
Journal name Journal of cleaner production
Volume number 173
Start page 124
End page 134
Total pages 11
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-07-26
ISSN 0959-6526
Keyword(s) emissions
environmental impact
greenhouse gas
precast in-situ
Summary Precast in-situ construction is gaining popularity among construction practitioners in China for its efficient system and its ability to reduce construction waste. However, there has been little to no empirical evidence that elucidates the greenhouse gas (GHG) emissions from this method. In an effort to address this knowledge gap, this paper establishes a systems boundary for the measurement of GHG emissions for precast in-situ construction. Employing a quantitative model, the GHG emissions of precast in-situ is determined and compared with conventional construction method. Results show that the precast in-situ construction produces less GHG emissions than the conventional method. Embodied GHG of building materials is found to be the main GHG emitter in both precast in-situ and conventional construction methods. Furthermore, four factors are identified that positively contributes towards reduced emissions: (i) embodied GHG emissions of building materials, (ii) transportation of building materials, (iii) resource consumption of equipment and techniques and (iv) transportation of waste and soil. Conversely, the transportation of on-site manufacturing equipment is identified as a negative factor on reduced emissions.
Notes In press
Language eng
DOI 10.1016/j.jclepro.2016.07.143
Field of Research 0907 Environmental Engineering
0910 Manufacturing Engineering
0915 Interdisciplinary Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
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