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Re: GSBN:list of the members


A few things strike me after looking at the tests.  The first is that
the ratio of fines/aggregate to clay is really, really, really high. 
Unless the fines have a lot more clay than anyone suspects.  I think
this is significant in that when making a comparison to what we use. 
If there are no fibers added, I would say that a ratio of 1 clay to 3
sand for a thickness of 1/4 inch would be the most I would ever
consider.  If that thickness is reduced to 1/8 inch, we rarely go more
than 1 clay to 1 1/2 sand.  On the opposite end of the spectrum, when
we do a high straw mix, the sand is usually held to half the clay
amount.  For example, a mix might be 3 straw, 2 1/2 clay to 1 1/4
sand.  As I remember without going back to your site, the ratio was
something like 1 clay to 13 fines.  That tells me is has to be quite
weak and that the wheat paste is doing a lot of the work instead of
the clay.  Why both manure and poly fibers?  A couple of thoughts -
the wheat paste is really weather susceptible, if you need a glue,
casein activated with lime acts a whole lot better - no comparison.  A
little linseed oil makes it even better.  I would like to discuss it
with you more when you have time.


On Tuesday, December 31, 2002, at 10:53 AM, Jeff Ruppert wrote:

<excerpt>Fellow Baleheads,

It has been awhile since I made a contribution to this group.  Just

to show you a small test and an example of a finished product using

plasters.  This is not our own mix.  We had the testing done by a
friend and

are posting the info for your enjoyment.  We want to promote the use of

earthen plasters and this is our first step in that direction.  Please

comment in any way on what you see.  The info is at:


Jeff Ruppert, P.E.

Odisea Engineering, Planning and Consulting

2241 17th St.

Boulder, CO  80304


303.443.4355 fax




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</excerpt><fontfamily><param>Helvetica</param>Athena & Bill Steen

The Canelo Project

HC1 Box 324

Canelo/Elgin, AZ 85611