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Re: GSBN:Siloxane - Potassium Silicate
At 3:11 PM +0100 11/9/06, André de Bouter wrote:
Anyone have any experience with the transparent casein/lime mix that
Gernot Minke mentions in his book?
Did any of you make paint for outside use by mixing finely sifted earth
or clay with any of these additives?
Is it a good idea to mix potassium silicate and/or siloxane in the
finish plaster before applying the plaster? Should one than wear gloves?
Is siloxane the same thing as potassium silicate?
Any other suggestions/products?
You might talk to Paul Salas of the University of
New Mexico's materials lab.
chansey@.... He hangs around the cob
and strawbale lists.
Some years ago I visited his lab and he was
experimenting with sodium and potassium silicates
for use on adobe. Having grown up in adobe
himself, he was particularly interested in
reducing the amount of annual maintainence needed
(the regular coats of limewash, etc). He
demonstrated two visually identical cubes of
earth placed under water - the untreated one
began dissolving while we talked, while the
treated one came out of the water wet, but
basically intact after about an hour. If I
recall, he said that after it dried out it would
be pretty much indistinguishable from untreated
adobe once again.
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