Influence of Different Mineral Precursors on the Properties of Fly Ash Based Alkali-Activated Mortars

Alkali-activated materials based on fly ash are widely developed and also produced on the present. Some of fly ashes are not suitable for production of alkali-activated materials because of their inconvenient chemical composition. Alumina-silicates are the most important components that are needed t...

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Bibliographic Details
Published in:Key engineering materials 2018, Vol.761, p.73-78
Main Authors: Raschman, Pavel, Špak, Matej
Format: Article
Language:English
Subjects:
Aluminum oxide
Chemical composition
Fly ash
Mechanical properties
Mortars (material)
Organic chemistry
Perlite
Silicates
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Summary:Alkali-activated materials based on fly ash are widely developed and also produced on the present. Some of fly ashes are not suitable for production of alkali-activated materials because of their inconvenient chemical composition. Alumina-silicates are the most important components that are needed to accomplish the successful reaction. The proper content of amorphous phase of alumina-silicates and its proportion as well should be provided for the final composition of alkali-activated materials. The influence of pure aluminum oxide powder as well as raw milled natural perlite on mechanical properties and durability of alkali-activated mortars was investigated. These minerals were used as partial replacement of fly ash coming from black coal combustion. In addition, the mortars were prepared by using different alkali activators.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.761.73