Influence of the activator nature on mechanical properties of fly ash-based geopolymer
Authors:
- Izabela Hager,
- Mateusz Sitarz
Abstract
Geopolymers are included in the group of low-emission materials called "low-carbon" binders. The amount of CO₂generated during production of the material may be reduced to only 10% of the CO₂emitted during production of Portland cement, which explainsthe increasing interest of the construction industry inthis type of binders. This paperpresentsa comparative study concerning fly ash-based geopolymers prepared with different formulations of activators.For aluminosilicate activation, most commonly available water glass mixed with sodium hydroxidepellets was used,as well as a specially developed aqueous silicate solutionGeosil®.The same molar ratiowas usedfor both activators. Twogeopolymermortarswere tested and comparedin the aspect of their mechanical properties. Tests were made on geopolymer mixes based on fly ash (FA) with the addition of ground granulated blast furnace slag (GGBFS), with the additives constituting10, 30 and 50%, respectively.The investigations enabled demonstration of the effect of different nature of activator on the mechanical performances at 2, 7 and 28 days.Test results show that both geopolymer mortars have obtained similar strengths.The use of a ready-made industrial activator facilitatethe mix preparation process, and makes it saferdue tothe limited handling of NaOH pellets.
- Record ID
- CUT0c0115117d344e1aaf8a9f0af364e201
- Publication categories
- ;
- Author
- Journal series
- International Journal of Advanced Science and Technology, ISSN 2005-4238, e-ISSN 2207-6360
- Issue year
- 2020
- Vol
- 29
- No
- 2
- Pages
- 631-637
- Other elements of collation
- tab.; wykr.; Bibliografia (na s.) - 636-637; Bibliografia (liczba pozycji) - 21; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 29, No. 2
- Keywords in English
- activator, fly ash, geopolymers, GGBFS, mechanical properties
- URL
- http://sersc.org/journals/index.php/IJAST/article/view/3236 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)
- 20
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT0c0115117d344e1aaf8a9f0af364e201/
- URN
urn:pkr-prod:CUT0c0115117d344e1aaf8a9f0af364e201
* 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.