<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The main goal of the research was to check the influence of different factors on the mechanical behaviour of the fluidised bed combustion (FBC) fly ash-based geopolymer. Tests have shown that the increasing the proportion of sodium silicate to sodium hydroxide causes a decrease of compressive strength and an increase of flexural strength. The addition of aggregate significantly increased flexural strength but decreases compressive strength. Samples cured at higher temperatures obtained higher strength. Finally, it was concluded that taking into account the mechanical behaviour, FBC fly ash-based geopolymer can be treated as an alternative building material; however, its strength is lower than a metakaolin-based geopolymer made of the same mixture composition.</p></abstract>

The main goal of the research was to check the influence of different factors on the mechanical behaviour of the fluidised bed combustion (FBC) fly ash-based geopolymer. Tests have shown that the increasing the proportion of sodium silicate to sodium hydroxide causes a decrease of compressive strength and an increase of flexural strength. The addition of aggregate significantly increased flexural strength but decreases compressive strength. Samples cured at higher temperatures obtained higher strength. Finally, it was concluded that taking into account the mechanical behaviour, FBC fly ash-based geopolymer can be treated as an alternative building material; however, its strength is lower than a metakaolin-based geopolymer made of the same mixture composition.

The Basic Mechanical Properties of the Fluidised Bed Combustion Fly Ash-Based Geopolymer

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This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

The main goal of the research was to check the influence of different factors on the mechanical behaviour of the fluidised bed combustion (FBC) fly ash-based...

The Basic Mechanical Properties of the Fluidised Bed Combustion Fly Ash-Based Geopolymer

Published Online: May 16, 2020

Page range: 107 - 117

Received: Aug 21, 2019

DOI: https://doi.org/10.4467/2353737XCT.19.100.10882

Keywords
FBC fly ash, geopolymer, curing conditions, compressive strength, flexural strength

© 2020 Natalia Paszek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

The Basic Mechanical Properties of the Fluidised Bed Combustion Fly Ash-Based Geopolymer

Published Online: May 16, 2020

Page range: 107 - 117

Received: Aug 21, 2019

DOI: https://doi.org/10.4467/2353737XCT.19.100.10882

KeywordsFBC fly ash, geopolymer, curing conditions, compressive strength, flexural strength

© 2020 Natalia Paszek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Keywords
FBC fly ash, geopolymer, curing conditions, compressive strength, flexural strength