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Indexed by:期刊论文

Date of Publication:2022-06-29

Journal:环境科学学报

Issue:9

Page Number:2632-2638

ISSN No.:0253-2468

Abstract:Composite Portland Cement (CPC) mixed with industrial residues has a destructive impact on ecological environment. This paper presents a life cycle assessment (LCA) of CPC using Gabi 4.4 and evaluates the environmental impact potentials during the production of cement. The parameters including Abiotic Depletion (ADP), Acidification Potential (AP), Eutrophication Potential (EP), Global Warming Potential (GWP), Human Toxicity Potential (HTP) and Photochemical Ozone Creation Potential (POCP) are analyzed and compared. The results show that, compared to other environmental impact potentials, the GWP potential is the most influenced factor, with the contribution proportion of 71%. Regarding the extent of environmental impacts, these parameters can be ordered as: GWP, AP, ADP, HTP, EP and POCP. Compared to other stages, calcination stage exerts the most destructive influence on the environment, with the contribution proportion of 68%. Regarding the extent of environmental impacts, the stages can be ordered as: calcination stage, grinding stage, transport, raw material preparation and raw material mining. The highest GWP, ADP and AP values are generated during calcination stage, the highest HTP and POCP values during grinding stage and the highest EP value during transport stage. This paper discusses the LCA of CPC to provide data for LCA of cement in China and to promote the sustainable development pattern for cement and construction industry.

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