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: 86–100

DOI: 10.18502/keg.v5i4.6800

Kinga Korniejenkokinga.korniejenko@mech.pk.edu.plCracow University of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Engineering, Jana Pawła II 37, 31-864, Cracow, Poland

Gábor MucsiUniversity of Miskolc, Institute of Raw Material Preparation and Environmental Processing, 3515, Miskolc, Egyetemváros, Hungary

Nóra Papné HalyagUniversity of Miskolc, Institute of Raw Material Preparation and Environmental Processing, 3515, Miskolc, Egyetemváros, Hungary

Roland SzabóUniversity of Miskolc, Institute of Raw Material Preparation and Environmental Processing, 3515, Miskolc, Egyetemváros, Hungary

Dariusz MierzwińskiCracow University of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Engineering, Jana Pawła II 37, 31-864, Cracow, Poland

Petr LoudaTechnical University of Liberec, Faculty of Mechanical Engineering, Department of Material Science, Studentska 2, Liberec, 461 17, Czech Republic

This article analyses the influence of a short basalt fibre admixture on the mechanical properties of geopolymers, especially compressive strength. This preliminary research is the first step towards the development of a composite for fire resistant applications in civil engineering. This study investigates the behaviour of a fly ash based geopolymer containing basalt fibres. Fly ash from the coal power plant ‘Skawina’ (located in: Skawina, Lesser Poland, Poland) was used as the raw material. The chemical composition of this fly ash is typical for class F. Three series of fly ash based geopolymers were cast. In the first, short basalt fibres were added as 1% by weight of fly ash, in the second short basalt fibres were added as 2% by weight of fly ash and the third functioned as a control series without any fibres. Each series of samples were tested on compressive strength after 28, 14 and 7 days, and specimen density was determined. Additionally, microstructural analysis was carried out after 28 days. The results show that the addition of basalt fibres can improve the mechanical properties of geopolymer composites.

Keywords: geopolymer, basalt fibre, composites, fire resistance

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