Greg
From: clydetcurry <clyde@evesgarden.org>
To: papercreters@yahoogroups.com
Sent: Sunday, August 31, 2008 2:04:11 PM
Subject: [papercreters] Re: PUMPED WALL FORM RECIPE
Hi, This is Clyde t. Curry at www.evesgarden. org . We ran extensive
tests for a year, integrating lime into the mix. Here is some of what
we think we found out. It appears that excess lime left unreacted from
the Portland Cement, which most people are adding to their mixes, is
the culprit for moisture retension. We have had buildings take over
two years too dry and stop shrinking and cracking. Lime by itself is
not strong enough and degrades over time. We looked at what the
concrete industry does to combat this problem. Answer- Pozzolan is
used to react the lime. - Still, flyash, volcanic ash and the sort are
not very reactive. Also they have to long an early set for processing
to occur. We found that Kaolin Clay based pozzolans are manufactured
to be super reactive. Google PowerPozz - Pozzolans are common practice
in Europe, Asia etc. - Pozzolans can be added to Lime only to make a
cement. Still, it would take to much Pozzolan. Our best results, by a
landslide, are obtained when we replace 10%, by weight, of the
portland cement we use as our binder, with Super reactive pozzolan.
With this mixture of cement and pozzolan plus the addition of an
aggregate (perlite, vermiculite, pumice, sand etc.) we get completion
of the drying and shrinkage phase in three weeks. This is for a
completed shell, plaster and all. We have much more to share - perhaps
the Moderator could call us at 1-432-386-4165 so we can do this with
out filling everyones mailbox. Yours Clyde
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