----- Original Message -----From: Forrest CharnockSent: Thursday, January 31, 2013 8:16 PMSubject: Re: [papercreters] ceramipapercreteI would not lose too much sleep over Global Warming seeing as the
climate has been warmer , much warmer , in the past and the result was
greater food production.
Many leading scientist from M.I.T. to Yale say it is a hoax and they
just got caught again :cooking the books" to "prove' their idea.
I remember 40 years ago scientist wanting to damn the Bering Straits
and set of H-Bombs to melt the Polar Ice Caps to prevent the end of
humanity due to Global Cooling, they believed we were entering yet
another Ice Age. They have yet to prove there were 2 Ice Ages but
most people are so ignorant of science they accept what is presented
as a 'consensus" as absolute truth. Not so long ago the "consensus:
was that blood letting was good medicine, George Washington would beg
to differ if he could.
On 1/31/13, eo greensticks eogreensticks@gmail.com> wrote:
> Hi,
>
> interesting yes, potentially groundbreaking.
>
> i am no chemist (dredging ancient memory from 35 years ago jr college
> chemistry jag!)
>
> and am more a ' teaspoon tester' than scientific analyzer* however*
>
> i love the way papercrete feels, compared to cement which i do not like the
> feel of-
>
>
> but there are obviously some limitations which need to be overcome.
>
>
> given climate change and the rainfall patterns seemingly in shift, i think
>
> it better to design for all possible conditions, not rely on choosing a dry
> zone to build with papercrete.
>
> Also, i live in Tasmania where we get a drought and a flood and then a
> fire perhaps
>
> all on the same day-that's the extreme example here-
>
> most days, we just get 4 seasons!
>
>
> the mystery to me is WHY papercrete ' works' as i understand that
> portland cement does not bind to fibre-
>
> (it has been explained to me , by Charmaine i think, that the portland
> encases the fibre and that is how it works...)
>
> but the porous nature (or do i mean pervious? not sure...) of portland
> cement admits water
>
> which rots the fibre, resulting in a failure of the material in wet
> conditions.
>
>
> on the other hand,
>
> Magnesium Phosphate cement Binds with fibre and additionally will Not admit
> water.
>
> It is more expensive than portland but the offset is you can use more fibre
> in the mix which sounds like
>
> Papercrete to me...
>
> as the MgPO4 concrete it a chemically bonded ceramic, it is water and fire
> proof-
>
> (living in dry schlerophyll forest, fire proof is good!)
>
> also, it is acceptable to soil life
>
> (i once poured out a bucket of water from washing the portland from my
> tools
>
> and a number of worms came writhing to the surface in agony-horrible)
>
> not to mention the CO2 footprint of Portland Cement-virtually a kilo of
> CO2 per kilo of PC...
>
>
> MgPO4 concrete absorbs CO2 as it cures altho with papercrete, maybe not as
> there
>
> is something about 'carbonation' to get this to happen.
>
>
> A sculptor called Michael Collins uses MgPO4 concrete- he is on the net-
>
> painting the slurry on cloth to develop emergency shelter- he says dip a
> piece of paper
>
> in the slurry and it becomes as if encased in ceramic.
>
>
> it is worth a trip to the US to try a bag of Grancrete or Ceramicrete-
>
> we can't buy it here!
>
>
> there are numerous patents and lots of scientific papers on ceramicrete
>
> but it is slow work for me to get the gist of it! I have the general idea,
> just working out
>
> how to get the right proportions by volume and how to apply realistically
> to building.
>
> Starting small with sculpture and plant pots.
>
>
> As soon as i can get the fine ground dead burned MgO ( i have finally found
> a supplier in Oz-
>
> it wasn't easy) i will begin testing and put up some posts about the
> results-
>
>
> but i would love to know if anyone out there has already tried
>
> to make 'ceramipapercete ' and what sort of result they had?
>
> (maybe i just haven't tried the right 'search word' !)
>
>
> cheers, eo
>
--
Forrest Charnock
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