---the meta kaolin is manufactured to react with the excess lime from
the portland -add it at a 15% replacement, by weight of the portland -
it makes additional cement, and thus strength - it is not designed to
be used alone - also adding lime would be counter productive as it is
the lime that causes a problem with the excess water in papercrete -
by the way the set characteristics of metakaolin nearly exactly match
those of portland - the usual problem is that people do not use nearly
enough cement in total ! METAKAOLIN COSTS $11 PER 40 LB. BAG IF BOUGHT
IN VOLUME ,TWICE AS MUCH A BAG AT A TIME- GOOD LUCK In
papercreters@yahoogroups.com, "clydetcurry" <clyde@...> wrote:
>
> Metakaolin pozzalon reacts with the excess lime in portland cement, it
> makes it into super cement while radically reduceing the problems that
> papercrete has with holding on to water--- In
> papercreters@yahoogroups.com, "Janoahsh" <janoahsh@> wrote:
> >
> > Thank You,
> >
> > That sounds like a really good mix Eli. What I was referring to
was the
> > cement mix for the papercrete. Most papercrete is made using Portland
> > Cement, but I've heard of others using Metakaolin and Slacked Lime.
> I am
> > curious as how the different applications compare. I remember that
> > Metakaolin increases fire resistance. Is it more or less brittle
> when dry,
> > does it retain water to a greater degree? I'm curious if it might
> be an
> > alternative to using Portland. I'm ready to begin testing again and
> thought
> > to try some clay mixes.
> >
> > Janosh
> >
> >
> >
> > _____
> >
> > From: papercreters@yahoogroups.com
> [mailto:papercreters@yahoogroups.com] On
> > Behalf Of Eli Sutton
> > Sent: Monday, January 28, 2008 1:14 PM
> > To: papercreters
> > Subject: [papercreters] Re:Mortar
> >
> >
> >
> > I can't speak to pluses and minuses but I can tell you how we make a
> very
> > successful mortar for our papercrete block house under construction.
> >
> > It is based on a traditional mortar mix. We make our slurry from
> newprint to
> > the consistency of oatmeal with the emulsifier shown in the Photos
> section.
> > We wet the blocks before laying up.
> >
> > Into a mixer we throw an almost full 5gal bucket of sand, 1qt of
> lime, 1qt
> > of Metakaolin, and 6qts of Portland. Mix. Add about 12qt of slurry
> adding
> > gradually until the consistency is right. Mix about 7 min.
> >
> > I hope this is useful.
> >
> > Eli
> >
> > BTW check out some pix of the project at
> > http://picasaweb.-google.com/-eli.verdesystems
> >
> >
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.5.516 / Virus Database: 269.19.14/1247 - Release Date:
> 1/28/2008
> > 10:59 AM
> >
> >
> >
> > No virus found in this outgoing message.
> > Checked by AVG Free Edition.
> > Version: 7.5.516 / Virus Database: 269.19.14/1247 - Release Date:
> 1/28/2008
> > 10:59 AM
> >
>
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