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2023 Vol.14, Issue 3 Preview Page

General Article

The use of metakaolin as a supplementary cementitious material to reduce the environmental impacts of ready-mixed concrete
Seungjun Roh1
,
Mina Seong2
,
Hyunsik Kim3
,
Rakhyun Kim4*
1Assistant Professor, School of Architecture, Kumoh National Institute of Technology, Gumi, Gyeongbuk, South Korea
2Master’s Course Student, Department of Architectural Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk, South Korea
3Postdoctoral Research Fellow, Department of Civil Engineering, Korea National University of Transportation, Chungju, Chungbuk, South Korea
4President, Greeners, Ansan, Gyeonggi, South Korea
*Corresponding Author
30 September 2023. pp. 418-425
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Abstract

This study endeavors to conduct an environmental performance analysis of concrete employing metakaolin as a substitute for cement. Through an exhaustive literature review, the study explores concrete mix designs incorporating metakaolin and limestone, employing a rigorous assessment methodology to quantitatively evaluate six environmental impact categories, four safety measures, and environmental costs, including reductions in carbon emissions. As a result, all mixtures containing metakaolin exhibited higher ODP values than PC (Portland Cement). GWP shows a strong correlation with the quantity of cement. Therefore, reducing the cement content is crucial for mitigating GWP. While metakaolin is effective in reducing certain environmental impacts, including GWP. This is because metakaolin not only increases ODP and ADP but also has an influence on biodiversity and environmental costs.

Keywords
concrete
metakaolin
limestone
life cycle assessment
environmental impact
References
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2
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Information
  • Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
  • Publisher(Ko) :건설구조물 내구성혁신 연구센터
  • Journal Title :International Journal of Sustainable Building Technology and Urban Development
  • Volume : 14
  • No :3
  • Pages :418-425
  • Received Date : 2023-09-23
  • Accepted Date : 2023-09-26
  • DOI :https://doi.org/10.22712/susb.20230031
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