Applying the mechanical milling method and annealing procedure, we prepared glass-ceramics using fly ash from a thermal power plant mixed with waste glass cullet to resolve the environmental waste recycling problem and find out the optimum crystallizing mechanism. The chemical durability of the heat-treated specimens [850oC, 950oC and 1000oC] was investigated by measuring the weight changes, morphological properties, and chemical composition at the sample surfaces before and after acid immersion by field emission–scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectrometry (EDS). Various properties, such as density, compressive strength, bending strength and Vickers hardness of specimens [before and after acid immersion] were observed. Regardless of chemical treatment, glass-ceramics heat-treated at 850oC, 950oC and 1000oC showed sufficient mechanical properties for practical usage.

Keywords: Glass-ceramics, Chemical durability, Milling method, Mechanical properties.