[Strawbale] Tashcrete again

[Shody Ryon]

Hi H.W.
I would like to discuss papercrete. I have not used
it. There are papercrete groups and sites:

http://www.geocities.com/flyingconcrete/

 I was suprise to learn that there are exterior
plasters that are not Portland cement based that have
a smaller carbon foot print, I assume. Perhaps they
are lime based. One kind of plaster is very flexible,
and perhaps more durable for your application. If you
are also looking for an interior or exterior plaster
as an adhisive, that should be easiliy addressed by
someone here, and if not, you may wish to ask on
another site.
Here is a repost from a recent post on a cob list,
Cheers, Shody:

      Someone talked to my last week about doing a
plastering project 
in New Orleans. I have mixed cob with a rototiller and
I have mixed 
earth floor material with a rototiller, but never
plaster.
       This week I did a very small scale test on
plaster which I think 
could be ramped up to large scale production. I
started by putting a 
bundle of news papers in a soaking pit and after two
days removed the 
papers and tore them into strips. (The soaked paper
tears very easily.) I 
then put it in a mixing pit and turned it for a bit
with fire clay 
($12. per 50 pound bag from places that sell brick
laying supplies.) The 
result is a light clay insulating material with a
little clay and a hard 
plaster with more clay. The light material could be
molded and dried 
into blocks to fill cavities for insulation and the
hard material makes a 
fairly decent wall plaster for covering a lath. 
         You can, of course, substitute screened clay
for the fire 
clay. I usually dry clay, break it up with a tamper in
my concrete slab and 
pour the powder through a screen.
             If anyone has a project where insulating
blocks might come 
in handy it would be nice to see someone else
experimenting with this 
and other new materials.
Ed


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