Some contributions to the examination of composites from power plant wastes

Doprinos proučavanju kompozita napravljenog od otpadnih materijala termoelektrana

  • Prvoslav Trifunović University of Belgrade – Faculty of Mining and Geology
  • Slobodanka Marinković University of Belgrade – Faculty of Mining and Geology
  • Rade Tokalić University of Belgrade – Faculty of Mining and Geology
Keywords: fly-ash; bottom ash; flue gas desulphurization gypsum; road construction


This paper describes an investigation into the possibilities of the use of all three types of solid power plant wastes: fly ash (FA), flue gas desulphurization gypsum (FGD gypsum) and bottom ash (BA) as components of composites for road construction. Two mixtures were made: 1. power plant wastes - Portland cement (PC) and 2. power plant wastes - sand (S) - Portland cement (PC). The mass ratio of components in these mixtures was: 1. FA - FGD gypsum - BA - PC = 2 : 1.5 : 5 : 1.5 and 2. FA- FGD gypsum-BA - S - PC= 2 : 1.5 : 4 : 1 : 1.5. For both mixtures, the compressive strength, the mineralogical composition, the water absorption and the resistance to freeze-thaw treatment were determined 7 and 28 days after preparation of samples (mixing with water). The obtained results showed that both mixtures could have potential to be used for sub-base layers in road construction and the second mixture (with natural aggregate-sand) has advantage over the first mixture in terms of compressive strength, mineralogical composition, and resistance to freeze-thaw treatment.


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How to Cite
Trifunović, P., Marinković, S., & Tokalić, R. (2015). Some contributions to the examination of composites from power plant wastes. Podzemni Radovi, (27), 41-48.

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