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Journal of Materials Science

, Volume 41, Issue 13, pp 4315–4319 | Cite as

Waste glass and fly ash derived glass-ceramic

  • Soon-Do Yoon
  • Yeon-Hum Yun
Article

Abstract

Crystallization behavior of a waste-based glass-ceramic was studied by means of X-ray diffraction analysis, and the surface morphological observations and chemical compositions were evaluated by field emission-scanning electron microscopy and energy dispersive X-ray spectrometry. Applying the mechanical milling method, the glass-ceramic was prepared by using fly ash from a thermal power plant mixed with waste glass cullet. Powder mixtures consisting of waste glass powder (70 wt%) and fly ash (30 wt%) were used to make glass-ceramic. Various heat treatment temperatures [900, 925, 950, 975, 1000 and 1025°C] were used to obtain a glass-ceramic of the optimum crystal phase, mechanical properties and chemical durability. The X-ray diffraction analysis showed that the crystalline phases in the glass-ceramic were diopside [Ca(Mg, Al)(Si, Al)2O6], augite [Ca(Mg, Fe)Si2O6] and wollastonite [CaSiO3]. The crystallization of an acicular phase in the matrix was achieved in the heat treatment temperature range of 1000–1025°C, and the acicular type main crystal phase in the glass-ceramic was wollastonite [CaSiO3]. The heat treatment temperature range [1000–1025°C] also showed much better mechanical properties.

Keywords

Compressive Strength Diopside Thermal Power Plant Wollastonite Chemical Durability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Department of Chemical Technology EngineeringChonnam National UniversityKwangjuSouth Korea
  2. 2.Department of Mineral & Energy Resources EngineeringChonnam National UniversityKwangjuSouth Korea

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