Production of Glass-Ceramics From Waste Materials and Optimization of the Main Process Parameters

Angjusheva, Biljana; Fidancevski, Emilija; Lisichkov, Kiril; Jovanov, Vojo

doi:10.7251/jepmen1608073a

Cited by 1 publication

(1 citation statement)

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“…One type of waste material with a high potential for production of ceramic materials is fly ash, a by-product of coal combustion in thermal power plants [1]. As a waste material, fly ash is often stored in landfills, where it presents a major source of environment pollution in the form of dust and toxic substances, such as heavy metals and Sulphur compounds.…”

Section: Introductionmentioning

confidence: 99%

Resistance to frost action and microbiological corrosion of novel ceramic composites

Jovanov

Vučetić

Markov

et al. 2023

CI&CEQ

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This work illustrates the prediction of frost action mechanisms on ceramic compacts, as well as their biocorrosion resistance to fungus action. The ceramic compacts were produced from two raw materials: coal fly ash (40 wt. %) and clay material (60 wt. %). The ceramics models were made in laboratory conditions by pressing (P = 45 MPa), drying (105?C, 3h) and sintering (1100?C, 1h; heating rates 3?C/min and 10?C/min.). The mechanisms responsible for the deterioration of the designed ceramic compacts were defined based on the values of the total porosity, pore size distribution, pore critical radius and the Maage factor, as well as on the values of water permeability. The process of biocorrosion was investigated by using Aspergillus niger fungus as a model microorganism. The different degrees of fungus colonization on the designed compacts were comparatively analysed based on the results of the Scanning Electron Microscopy investigation. The gained results are encouraging as they show that the utilization of fly ash (40 wt. %) in ceramic composites is possible without significantly deterioration of their durability (frost action and microbiological corrosion resistance) compared with the ones whose production was based only on clay material.

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Section: Introductionmentioning

confidence: 99%