Environmental Benefit Assessment of Blended Cement with Modified Granulated Copper Slag

This study aimed to investigate the environmental impact of modified granulated copper slag (MGCS) utilization in blended cement production at a representative cement plant in China. Sensitivity analysis was performed on the substance inputs, and the life cycle impact assessment (LCIA) model was app...

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Bibliographic Details
Published in:Materials 2022-08, Vol.15 (15), p.5359
Main Authors: Zhang, Qinli, Zhang, Bingyi, Wang, Daolin
Format: Article
Language:English
Subjects:
Building materials
Cement plants
Construction materials
Copper
Depletion
Energy consumption
Environmental impact
Granulation
Life cycle assessment
Limestone
Metallurgy
Particle size
Portland cements
Sensitivity analysis
Slag
Toxicity
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Summary:This study aimed to investigate the environmental impact of modified granulated copper slag (MGCS) utilization in blended cement production at a representative cement plant in China. Sensitivity analysis was performed on the substance inputs, and the life cycle impact assessment (LCIA) model was applied. A detailed comparative analysis was conducted of the environmental impact of cement production in other studies, and ordinary Portland cement production at the same cement plant. Results showed that calcination has the largest contribution impact of all the impact categories, especially in causing global warming (93.67%), which was the most prominent impact category. The life cycle assessment (LCA) result of blended cement was sensitive to the chosen LCIA model and the depletion of limestone and energy. In this study, producing blended cement with MGCS effectively mitigated the environmental impact for all the selected impact categories. Results also show a reduction in abiotic depletion (46.50%) and a slight growth (6.52%) in human toxicity. The adoption of MGCS in blended cement would therefore generally decrease the comprehensive environmental impact of cement, which contributes to the development of sustainable building materials.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15155359