Comparative study on morphology of ground sub-bituminus FBC fly ash geopolymeric material
作者： Manisara Eiamwijit , Katavut Pachana , Supranee Kaewpirom , Ubolluk Rattanasak , Prinya Chindaprasirt
DOI: 10.1016/J.APT.2015.04.013
关键词:
摘要: Abstract Fluidized bed coal combustion (FBC) is a clean and environmentally friendly process with low emission of SO 2 NO x to atmosphere. However, fly ash from FBC not suitable for further utilization due the high sulfate glassy phase contents. was ground reduce pore increase specific surface area use as source material in geopolymer. geopolymers different sodium silicate hydroxide (G/N) mass ratios were studied characterized using X-ray diffraction (XRD), scanning electron microscopy energy dispersive spectroscopy (SEM–EDX), Fourier transform infrared spectroscopic (FTIR) techniques. Compressive strength materials also tested. Test results indicated that G/N ratio had significant effect on morphology Low gave geopolymer large amount calcium hydroxide. The mixes increased water glass content dense homogeneous composites. presence resulted formation products which coexisted aluminosilicate products.
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