Comparison of the properties of glass, glass-ceramic and ceramic materials produced from coal fly ash

M. Erol*, S. Küçükbayrak, A. Ersoy-Meriçboyu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

141 Citations (Scopus)

Abstract

Glass, glass-ceramic and ceramic materials were produced from thermal power plant fly ash without any additives. X-ray diffraction (XRD) analysis revealed the amorphous phase of the glass sample. Augite phase was detected in the glass-ceramic sample, while the enstatite and mullite phases occurred in the ceramic samples. Scanning electron microscopy (SEM) investigations showed that tiny crystallites homogeneously dispersed in the microstructure of the glass-ceramic sample and elongated crystals formed in the ceramic samples. Density values of the obtained samples are comparable to those of the commercially produced glass, glass-ceramic and ceramic samples. Toxicity characteristic leaching procedure (TCLP) results indicated that the produced samples could be taken as non-hazardous materials. Produced samples showed high resistance to alkali solutions in contrast to acidic solutions. Microstructural, physical, chemical and mechanical properties of the produced glass-ceramic samples are better than those of the produced glass and ceramic samples.

Original languageEnglish
Pages (from-to)418-425
Number of pages8
JournalJournal of Hazardous Materials
Volume153
Issue number1-2
DOIs
Publication statusPublished - 1 May 2008

Keywords

  • Ceramic
  • Coal fly ash
  • Glass
  • Glass-ceramic

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