I want to know how to find the evidence of the existence geopolymer.Because of the Fe2O3 in fly ash,it's hard to do the NMR,and the results of XRD is not that obvious. So is there anything else to determine the existence of geopolymer based on slag/fly ash geopolymer?
Dear Xinyu Kan,
I understand your difficulties in determining the geopolymer existence. It's difficult to do NMR with Fe2O3 existence in fly ash. In XRD, if your compounds is n crystalline form you might have got an idea otherwise its waste of time in doing XRD. I kindly suggest you can try with Inductively Coupled Plasma Mass Spectrometry, Atomic Absorption Spectroscopy, Laser Raman Spectroscopy. You can get all the informations of geopolymer mix.
Some of the other characterization tools which will give you information on geopolymer formation is SEM with EDX analysis, EDX of gel phase will give you the chemistry of gel. You can also try FTIR and concentrate on spectra belonging to Si-O and Al-O
There isn't NASH in geopolymer technology...probably you are referring to alkali activated technology, but geopolymer and alkali activated materials aren't sinonimous of same materials...at all.
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