The impact of the curing process on the efflorescence and mechanical properties of basalt fibre reinforced fly ash-based geopolymer composites
Authors:
- Kinga Korniejenko,
- Dariusz Mierzwiński,
- Roland Szabó,
- Nóra Papné Halyag,
- Petr Louda,
- Eythor Rafn Thorhallsson,
- Gábor Mucsi
Abstract
Efflorescence is one of the limitations of the widespread use of geopolymers. This problem is caused by excess unreacted sodium oxide remaining inside materials. Unreacted sodium oxide creates white efflorescence on the surface of the produced material in the form of sodium carbonate heptahydrate Na2CO3∙ 7H2O. It decreases not only the aesthetic value of the final products, but also the mechanical properties of the material. The aim of this article is to analyse the influence of the curing method on the appearance of efflorescence on geopolymer composites reinforced by short basalt, especially on mechanical properties. Class F fly ash from the ‘Skawina’ coal-fired power plant (located in Skawina, Lesser Poland, Poland) was used as raw material for the geopolymerization process. The article compares two methods of curing: typical laboratory conditions (in the air) and samples submerged in water. Three series of fly ash-based geopolymer were cast: basalt fibres were added as 1% and 2% by weight of fly ash and one control series without any fibres. The investigation was performed using visual analysis, including microstructure investigation, and the testing of mechanical properties (compressive strength at ambient temperature) after 28 days.
- Record ID
- CUTb94ada763c064b168036c9921629a97d
- Publication categories
- ; ;
- Author
- Pages
- [1-9]
- Other elements of collation
- il. (w tym kolor.); Bibliografia (na s.) - 8-9; Bibliografia (liczba pozycji) - 33; Oznaczenie streszczenia - Abstr.
- Substantive notes
- Section: E-mobility, Sustainable Materials and Technologies
- Book
- Tracz Tomasz, Tomasz Tracz Mróz Katarzyna, Katarzyna Mróz Zdeb Tomasz Tomasz Zdeb (eds.): MATBUD’2020 – Scientific-Technical Conference: E-mobility, Sustainable Materials and Technologies, MATEC Web of Conferences, no. 322, 2020, [S.l.], EDP Sciences, ISBN 978-2-7598-9108-5
- Keywords in English
- curing process, efflorescence, mechanical properties, basalt fibre, fly ash-based geopolymer, geopolymer composites
- DOI
- DOI:10.1051/matecconf/202032201004 Opening in a new tab
- URL
- https://www.matec-conferences.org/articles/matecconf/abs/2020/18/matecconf_matbud2020_01004/matecconf_matbud2020_01004.html Opening in a new tab
- Related project
- E-mobilność oraz zrównoważone materiały i technologie. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 5
- Additional fields
- Indeksowana w: Web of Science
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTb94ada763c064b168036c9921629a97d/
- URN
urn:pkr-prod:CUTb94ada763c064b168036c9921629a97d
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.