Published date: Apr 13 2020

Journal Title: KnE Engineering

Issue title: REMINE International Conference on Valorization of Mining and Industrial Wastes into Construction Materials By Alkali-activation

Pages: 178–187

DOI: 10.18502/keg.v5i4.6808

Anne Mette T. SimonsenDepartment of Civil Engineering, Technical University of Denmark, Building 118, 2800 Lyngby, Denmark

Kristine B. PedersenAkvaplan-niva AS, Framsenteret, Postbox 6606 Langnes, 9296 Tromsø, Norway

Pernille E. Jensenpej@byg.dtu.dkDepartment of Civil Engineering, Technical University of Denmark, Building 118, 2800 Lyngby, Denmark

This study investigates the utilization of mine tailings, the by-product originating from metal- and mineral-based ore mining, as a new cement replacement material. This paper is based on the chemical and physical characteristics of 13 mine tailing samples. In this study, Chemometrics were applied to consider all parameters simultaneously and obtain a thorough screening of potential relations in the large data set. Hierarchical Cluster Analysis (HCA) groups samples according to (dis)similar features and Principal Component Analysis (PCA) visualizes predominating variables and relations to samples. The application of HCA highlighted a clear grouping between mine tailings according to characteristics. Meanwhile, PCA identified the predominant chemical and physical characteristics in the mine tailing samples. Chemometrics therefore provided a thorough overview of mine tailings’ physical and chemical characteristics.

Keywords: mine tailings, chemometrics, cement replacement

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