The influence of fibre pre-treatment on the mechanical properties of the geopolymer composites

The influence of fibre pre-treatment on the mechanical properties of the geopolymer composites

Paper in proceedings (conference paper)

This article aims to analyse the long-term influence of the pretreatment method on mechanical properties such as the compressive strength of geopolymer composites reinforced with short natural fibres (length of around 5 mm). This paper presents the behaviour of sodium activator-synthesised fly ash geopolymer containing natural fibres at ambient temperatures. Fly ash from the Skawina coal power plant (located in: Skawina, Lesser Poland, Poland) was used as a raw material. The chemical composition of the fly ash was typical for class F. The article evaluated the methods of pre-treatment of the fibres on the mechanical properties of the geopolymer composites. It compares the plain specimens and composites with fibres pre-treated in water and alkali solutions as well as with fibres without any pre-treatment. The fibres were added at the amount of 1% by weight. The investigation was made by visual analysis and the testing of mechanical properties (compressive and flexural strength at ambient temperature) after 6 months. The achieved results do not confirm the positive influence of the fibre pre-treatment on the mechanical properties of the composites.

This article aims to analyse the long-term influence of the pretreatment method on mechanical properties such as the compressive strength of geopolymer composites reinforced with short natural fibres (length of around 5 mm). This paper presents the behaviour of sodium activator-synthesised fly ash geopolymer containing natural fibres at ambient temperatures. Fly ash from the Skawina coal power plant (located in: Skawina, Lesser Poland, Poland) was used as a raw material. The chemical composition of the fly ash was typical for class F. The article evaluated the methods of pre-treatment of the fibres on the mechanical properties of the geopolymer composites. It compares the plain specimens and composites with fibres pre-treated in water and alkali solutions as well as with fibres without any pre-treatment. The fibres were added at the amount of 1% by weight. The investigation was made by visual analysis and the testing of mechanical properties (compressive and flexural strength at ambient temperature) after 6 months. The achieved results do not confirm the positive influence of the fibre pre-treatment on the mechanical properties of the composites.

fibre, pre-treatment, geopolymer, strength

fibre, pre-treatment, geopolymer, strength

KORNIEJENKO, K.; FIGIELA, B.; ŠIMONOVÁ, H.; KUCHARCZYKOVÁ, B.; DUARTE GUIGOU, M.; LACH, M.

2021

14.10.2020

EDP Sciences

France

MATBUD’2020 – Scientific-Technical Conference: E-mobility, Sustainable Materials and Technologies

2261-236X

MATEC web of conferences

322

1

French Republic

1

7

7

https://www.matec-conferences.org/articles/matecconf/abs/2020/18/matecconf_matbud2020_01012/matecconf_matbud2020_01012.html

http://hdl.handle.net/11012/196387

matecconf_matbud2020_01012