Liquid phase sintering of dense and porous glass-ceramics from coal fly-ash and waste glass

Glass-ceramics were produced utilizing 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 C-fibers as pore creators porosity of 70?4 and 55?5 %, respectively, can be obtained-modulus and bending strength of the porous systems obtained by polyurethane foam and C-fibers was 2.7?0.5 GPa and 4.5?1 MPa and 7.1?1 GPa and 9.3?2 MPa respectively.