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 language | English |
|---|---|
| Pages (from-to) | 418-425 |
| Number of pages | 8 |
| Journal | Journal of Hazardous Materials |
| Volume | 153 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1 May 2008 |
Keywords
- Ceramic
- Coal fly ash
- Glass
- Glass-ceramic