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Production of ceramics using bottom ash and fly ash from a thermal power plant Biljana Angjusheva, Emilija Fidancevska, Vilma Ducman, Ljubica Vladicevska

Author(s): Ole Mejlhede Jensen, Konstantin Kovler, Nele De Belie
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference
Materials, Systems and Structures in Civil Engineering 2016
Segment on Concrete with Supplementary Cementitious Materials
Editor(s): Ole M. Jensen, Konstantin Kovler and Nele De Belie
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 354 - 361
Total Pages: 8
Language : English

Abstract: The aim of this work was to investigate the possibility of the production of ceramics from fly ash (FA) and bottom ash (BA) produced at thermo-electric power plants. Ashes originating from the REK Bitola thermal power plant, which is located in the Republic of Macedonia, were used for this investigation. The physical and chemical properties of the ashes are analyzed and discussed. Using a powder processing technique, ceramic products were made with a variable ratio of the BA and the FA. It was found that the main processing factors which affected the physical and mechanical properties of these products are the amount of added fly ash, and the sintering temperature. It was also found that the greatest effect on the density, porosity, and mechanical properties of the products are the lower residual coal content in the fly ash compared to the bottom ash, the different geometry of the particles, the fineness of the powders, and the particle size distribution. The best values for bending strength and E-moduli were 31±1 MPa and 19±1 GPa. They were achieved in the case of the samples having a BA/FA ratio of 1:3 and a an applied pressure of 100 MPa, with sintering at 1100 o C.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00

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