DBPapers
DOI: 10.5593/sgem2017/11/S04.113

MECHANICAL ACTIVATION OF SLAG AND ITS INFLUENCE ON MECHANICAL PROPERTIES OF GEOPOLYMERS

M. Marcin, K. Sandorova, M. Matasovsky, B. Loch, B. Roth
Tuesday 12 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-98-8 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 11, 889-894 pp, DOI: 10.5593/sgem2017/11/S04.113

ABSTRACT

Slag is one of the by-products of energy industry which is suitable for secondary industrial processing. Although slag has been successfully used in industrial production for several decades its use does not achieve the level of its potential. This work describes the improvement of mechanical properties of alkali activated binders – geopolymers made of slag. The effect of mechanical activation on mechanical properties of geopolymers was examined. Mechanical activation was made with ball mill and different time of milling. Synthesis of geopolymers was carried out in drier at 80°C. Samples were made before mechanical activation and after. The differences in strengths of samples were examined. Mechanical properties such as compressive strength and flexural strength that was measured was the most significant attribute. Samples were tested after 7, 28 and 90 days. Results shows that the mechanical activation is an important factor in synthesis of slag based geopolymers, which has better properties after mechanical activation.

Keywords: Geopolymers, slag, mechanical activation

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