Usability of Fly Ashes from Czech Republic for Sintered Artificial Aggregate

Vit Černý; Šárka Keprdová

doi:10.4028/www.scientific.net/AMR.887-888.805

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 887-888Usability of Fly Ashes from Czech Republic for...

Usability of Fly Ashes from Czech Republic for Sintered Artificial Aggregate

Abstract:

Artificial sintered aggregate produced by self-firing is one of the few building materials, which can be produced with only fly ash. If the character of the fly ash is optimal, no other additions are needed. However, not every fly ash has optimal composition. Quality of fly ash then influences composition of the mix, technological parameters and quality of produced aggregate. Parameters influence the process of self-firing, strength of granules during the phases of drying process, ignition and burning under given underpressure on an agglomerating bed. This often influences correct setting of proportion of combustion material and reduces quality of aggregate. The paper evaluates fly ash produced in the Czech Republic by both high temperature and fluidized bed combustions. Their granulometry, specific surface, bulk weight, structure, chemical composition and behavior at higher temperatures up to the melting point are evaluated.

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Periodical:

Advanced Materials Research (Volumes 887-888)

Pages:

805-808

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.887-888.805

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Online since:

February 2014

Authors:

Vit Černý*, Šárka Keprdová

Keywords:

Artificial Aggregate, Bottom Ash, Clinkering, FBC Ash, Fly Ash (FA), Lightweight Aggregate, Sintering

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