Liquid Phase Sintering of Dense and Porous Glass-Ceramics from Coal Fly-Ash and Waste Glass

Glass-ceramics were produced utiliѕing fly-ash from coal power stations and waste glass of TV monitors, windows and flask glass. The powder technology route was employed. The mixture of 50% fly ash and 50% waste TV glass increases the bending strength from 12±1 to 56±4 MPa and E-modulus from 6±1 to 26±3 GPa. Using polyurethane foam and Cfibres as pore creators, porosity of 70±4 and 55±5 %, respectively, can be obtained.Emodulus and bending strength of the porous systems obtained by polyurethane foam and Cfibres was 2.7±0.5 GPa and 4.5±1 MPa and 7.1±1 GPa and 9.3±2 MPa, respectively.