Cob Would it still be "cob"?

[Michael Blate]

In researching low-cost, structurally-sound building for my farm in NC,
I learned recently that some people were filling the foam-forms (e.g.,
PolySteel, BlueMaxx, etc.) -- which are designed to be filled with
concrete -- with sand, instead of concrete.  This touched one of those
special places in my heart: Hi-tech meets low-tech.
   So I wondered: What would happen if you did the same thing with mud?
Probably still need to use rebar, of course, but wouldn't it be cob,
too?  Or combine local stones + mud.  Any thoughts?  Any experiences?
   Right now, I'm leaning toward foam-forms with the conventional
concrete for the first floor, then putting a SteelMaster-type building
on top of that.  Comments appreciated about that, too, even though it's
off-cob.
 Thanks, and be well!
Michael Blate

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