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freeze-resistant ceramics, reply to dave

updated thu 25 jan 07

 

stephani stephenson on tue 23 jan 07


DAVE

ANSI says , and this is from memory so please verify
...many many nuances i can't go into via email and
which aren't lodged in my memory!!!!

but it is interesting to see how they define the
following:


non vitreous tile ...over 7% absorption
semi vitreous tile : between 3% and 7%
vitreous tile : under 3%
quarry tile : under 5% quarry

wall tile can be anything under 20% absorption

distinctions are made and standards vary regarding
dust press tile versus porcelain tile versus natural
clay tile

there are also sections on glazed tile versus non
glazed tile, pavers, quarry tile wall tile etc.

nothing i saw in my ANSI book mentioned whether these
were for
indoor or outdoor uses...... as you guessed ... the
ASTM would
have the testing methods regarding freeze thaw i
believe, and other tests for absorption for varios
used
of course this is for tile...not necessarily all
ceramic applications

also , i too have tested some claybodies and gotten
absorption and c/b
ratios and i'll look over them to see where they
range with regard to overall absorption and saturation
coefficient...but as Elenora indicates, the ones which
had the lower saturation coefficients were
porous..i'd say , into the 'non vitreous '
category',,....
it's interesting!
hope this helps!
Stephani






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