Author/Authors :
Mirja Illikainen، نويسنده , , Mirja and Tanskanen، نويسنده , , Pekka and Kinnunen، نويسنده , , Pنivِ and Kِrkkِ، نويسنده , , Mika and Peltosaari، نويسنده , , Olli and Wigren، نويسنده , , Valter and ضsterbacka، نويسنده , , Jan and Talling، نويسنده , , Bob and Niinimنki، نويسنده , , Jouko، نويسنده ,
Abstract :
An investigation into the self-hardening of fly ash from the fluidized bed combustion of wood, peat and forest industry residuals shows the self-hardening strength of eight different ash samples after 28 days of curing at room temperature followed by 7 days at 50 °C to be dependent on its reactive calcium, aluminium and sulphate content. The main reaction products were ettringite and hydrocaluminate. Sulphate was found to be the most typical limiting component for ettringite formation.
Keywords :
Biomass fly ash , fluidized bed combustion , Hydration , Ettringite , Self-hardening
