Papercreters: Re: [papercreters] Re: Thermal Mass Rocket Stove Heater with Papercrete

Wednesday, January 18, 2012

Re: [papercreters] Re: Thermal Mass Rocket Stove Heater with Papercrete

that sounds like how i do papercrete-planning to try a small patio
rocket but thought i would use a layer of perlite concrete which is
then rendered with papercrete-i am using 2-1 magnesium to portland as
th concrete constituent with phosphoric acid 'boosted' chicken manure
additionaly so somethin along th lines of 2 pulp, 1 chick manure with
about 1/20 part phosphoric acid, 1 sand to 1 part cement made into a
slurry (2-1 mag to pc) -not sure about th thermal mass or insulative
factor, guess thats part of th experiment in small patio rocket
project. on th woodstove i cobbed around, i used an inch thick layer
of wood ash between th metal and th cob which i read about doing-(an
insulative layer?) result: vastly improved and beautified th leaky old
stove and made a nice warm place to sit, leaning against its warm
side. some minimal cracking but repairable.

On 1/19/12, countryatheartok <criswells.ok@sbcglobal.net> wrote:
>
> My thoughts are........why would the papercrete, if mixed the way I mix
> it, which is to add the wet paper pulp to the mixing container, then add
> the cement and mix until the paper pulp looks like wet cement and no
> paper pieces can be seen, then add clay and sand to that mixture until
> the desired thickness is achieved, then this mixture can be applied just
> like cob, why would the cement impregnated paper burn and the straw in
> cob not burn, and the straw is not impregnated with cement, it is still
> just straw?
>
> I am going to build a rocket stove and use the papercrete mixture listed
> above and I will post my results when complete, this experment may
> benifit all who are looking for a way to heat with wood and not have to
> have cords upon cords of wood just to get through a winter.
>
> I realize what I am calling papercrete probably is not what most of you
> would call paprecrete, my mixture is 3-2-1 same as concrete, three
> paper, (1 clay and 1 sand, sometimes two clay or two sand instead of one
> each), and one cement, this mixture will dry very fast, in hot weather
> it will harden overnight, it shrinks very little, and even cob shrinks
> some while it is drying.
>
> Bob
>
>
> --- In papercreters@yahoogroups.com, JUDITH WILLIAMS
> <williams_judith@...> wrote:
>
> I haven't been following this subject (in MA with my daughter with very
> limited internet access) but will say that I have used papercrete and
> cob together in my fireplace. I put the cob near where the fire will be
> and the papercrete on the outside to insulate. I know others have done
> this in the past. The idea is to store the heat and not catch the thing
> on fire.
>
>
> I know Paul Wheaton (from permies.com and richsoil.com) this is a great
> idea when using cob, but bad idea for papercrete. It won't get thermal
> mass. You will burn the wood or whatever you put in there more
> efficiently but you won't get the heat you want. Also I would venture to
> guess that the paper fibers themselves might gassify with all that heat,
> and not sure what that would do internally to the cement (i.e. de-bond
> the cement?)
>
>
> I've been looking at the following site
> http://www.richsoil.com/rocket-stove-mass-heater.jsp and others, and was
> wondering if instead of cob for thermal mass, if papercrete could be
> used instead. Has anybody else thought of this or tried it?
>
> Bob
>
>
>