DBPapers
DOI: 10.5593/SGEM2016/HB63/S09.062

USE OF RECYCLED MAGNETITE DUST FROM POWER PLANT FOR CEMENT MORTARS MODIFICATION

J. Borucka-Lipska
Friday 11 November 2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, SGEM Vienna GREEN Extended Scientific Sessions, www.sgemviennagreen.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-79-7 / ISSN 1314-2704, 2 - 5 November, 2016, Book 6 Vol. 3, 481-488pp, DOI: 10.5593/SGEM2016/HB63/S09.062

ABSTRACT
The subject of this paper is to present the possibilities of using magnetite dust in civil engineering. As part of developing modern technologies related to environmental protection in the Department of Reinforced Concrete Structures and Concrete Technology of West Pomeranian University of Technology in Szczecin, the author attempted to modify cement mortars with magnetite dust. Magnetite dust is a recycled waste product obtained by separating the heavy fraction of fly ash produced in power plants in the burning process of coal and lignite. For this study, 18 mortars based on Portland cement CEM I 42.5 were designed. The mortars were divided into three groups with different water-cement ratio: w/c=0.5; w/c=0.4; w/c=0.35. Each mortar had different content of magnetite dust: 0, 1, 2, 5, 10 and 20% of cement weight. The magnetite was added by replacing the aggregate. The results show the influence of magnetite dust content on chosen properties of fresh and hardened mortars. Correlation and regression analysis as well as statistical tests were performed for those properties to confirm the influence of mortar content and water-cement ratio. The highest compressive strength was obtained for mortars with w/c=0.4 modified with magnetite dust. Performed tests showed that this waste products of burning coal can be used to improve the properties of cement mortars.

Keywords: cement mortars, magnetite dust, recycled waste products, environmental protection, sustainable building

PAPER DOI: 10.5593/SGEM2016/HB63/S09.062, USE OF RECYCLED MAGNETITE DUST FROM POWER PLANT FOR CEMENT MORTARS MODIFICATION

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