norew
99 posts
TimePosted 02/08/2011 11:05:26
norew says

Free Lime

What is the effect of water if present in glasswares in free lime determination?

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Ted Krapkat
536 posts
TimePosted 03/08/2011 05:29:25

Re: Free Lime

norew:
What is the effect of water if present in glasswares in free lime determination?

Norew,

Water reacts with clinker minerals such as C3S and C2S to produce calcium silicate hydrates (CSH) and Ca(OH)2.

Ca(OH)2 will react just like CaO with the HCl used in the free lime titration. Therefore, if water is present in either the glassware or the ethylene glycol/ethanol solvent used to dissolve out the free lime, you will no doubt get a falsely high result.

Regards,

Ted.

 

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