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The sintering and phase formation of glass press-powders, obtained after melting and re-melting of MSW bottom ash, were investigated by non-isothermal dilatometry and differential thermal analysis. Additionally, a series of composite materials, containing 20 vol \% corundum powders with different fraction size, were prepared and studied. The crystalline phases, formed at different temperatures, were evaluated by X-ray diffraction and the structure of glasses and final materials were observed by scanning electron m...