I have run some tests in Tennessee with clay and with clay and Portland.
In a dry climate the clay would be fine with a water resistant Stucco
but here it would require a lot of maintenance unless you elevated it
above the ground contact and used large overhangs.
On 5/5/11, Joy Pickens <lilyklink@yahoo.com> wrote:
> There are some really good and really GREEN reasons to avoid PORTLAND when
> you
> can. http://geoswan.com/wp-content/uploads/2010/11/MgO-GENERAL.pdf
>
> And if I remember right,(I have, having recently found out aobut Magnesium
> Oxide
> cement and read several things on it.) it mentions is this article the
> propensity for portland cement to have a never ending mold problem or at the
> very least a moisture problem.
>
> Joy in OK
>
>
>
>
> ________________________________
>
> From: Donald Miller <donald1miller@yahoo.com>
> To: papercreters@yahoogroups.com
> Sent: Thu, May 5, 2011 10:30:57 AM
> Subject: Re: [papercreters] question about cement
>
> The clay soil I have here in SW Arizona is fine and works great for
> papercrete.
> I have made blocks with cement and clay and the only difference is that the
> mix
> with cement dries faster. They both absorb water to an equal degree. If you
> have
> access to clay I would recommend using it instead of cement in the mix. Much
> cheaper as well as much greener. Some of the newbies that have cropped up on
> the
> site lately seem to be bent on reinventing the wheel. There is tons of
> information in the archives of this site and much to be learned from the
> experiments and results of others.
>
> --- On Wed, 5/4/11, Spaceman <Spaceman@starship-enterprises.net> wrote:
>
>
>>From: Spaceman <Spaceman@starship-enterprises.net>
>>Subject: Re: [papercreters] question about cement
>>To: papercreters@yahoogroups.com
>>Date: Wednesday, May 4, 2011, 4:32 PM
>>
>>
>>
>>I have about 100 pounds of potter's clay sitting outside. It has been there
>>
>>since I moved here in 1992 and the weather has not affected it at all while
>> I
>>find time to make a wheel.
>>
>>
>>Papercrete made with portland cement is not waterproof at all, unless you
>> seal
>>it. I suspect a clay mix might even be more waterproof since clay actually
>> makes
>>a pretty good seal. I don't have any clay on my sandy property other than
>> the
>>potter's clay so I have not tested it, but several on this group have used
>> clay
>>with great success.
>>
>>
>>I have made a lot of papercrete with paper and cement and I have watched it
>> soak
>>up a thunderstorm so fast that there is no runoff. None soaks through,
>> either.
>>It's like a sponge, to coin a phrase : )
>>
>>
>>spaceman All opinions expressed or implied are subject to change without
>> notice
>>upon receipt of new information. http://starship-enterprises.net/
>>On 5/4/2011 2:37 PM, Alan wrote:
>>I have not done any papercrete yet but I grew up doing lots of stuff with
>> clay.
>>>If you use clay instead of Portland Cement your papercrete will not be as
>>> water
>>>proof.
>>>Unless you fire the clay it will soften up when it gets wet.
>>>Why take the risk?
>>>Pay for the cement.
>>>Alan
>>>
>
--
Forrest Charnock
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