Off topic perhaps but I have also live in a male centric culture (northern NM macho-Hispanic). I'm not complaining. I do find though that if I go to pick up materials or inquire about a product or material that I get excellent attention. They seem to think it's amusing to have an over the hill woman wanting to know the properties of perlite and such things. In fact I quite often go alone even when I have a male volunteer (unless I have something really heavy or awkward to load). I find people in general and men especially happy to help.
I have not really followed your discussion here and am wondering what your motivation is in looking for more things to put in papercrete. Are you trying to stretch the cement or make a better product? I tried a few mix formulas before I settled on one using things that are cheap, free, and/or readily available. Keep up the good work. Everyone has different circumstances and anything you find that improves things will help all in your area.
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
~ in Memoirs of the Life and Writings of Benjamin Franklin
Follow progress on the new project at http://www.papercretebyjudith.com/blog
More papercrete info at http://squidoo.com/papercretebyjudith
To: papercreters@yahoogroups.com
From: eogreensticks@gmail.com
Date: Mon, 28 Feb 2011 20:43:27 +1100
Subject: Re: [papercreters] Re: What is it that shrinks in papercrete?
as th retarder, as i understand it will for portland and mag cements?
there is a magnesium cement marketed in th US as Grancrete-here in
Tasmania we dont always get the same products as other places-the
Concrete suppliers are a very male- centric mob,I'm not sure they
quite know what to make of a female inquiring about esoteric concrete
suppllies-it would be good to know what the specific chemical formula
is for CSA if possible?
On 2/28/11, shahoma prasad <prahoma@yahoo.com> wrote:
> CSA cements are low shrinkage compared to portland and have a lower carbon
> footprint. Another plus is CSA cements bond really well to organic fibers.
> They are also shipped around more than mag phos cements. You can even find
> CSA cements at HD, bagged under the rapid set brand. Youve got to get the
> purple rapid set bags to be getting CSA's.
> Make sure you pick up some retarder while your there, it can go off quick
> without it. A lot of hardy board products are cellulose and CSA blends.
> Another brand is Ultimax Cements out of California.
>
>
>
> --- On Sat, 2/26/11, eo greensticks <eogreensticks@gmail.com> wrote:
>
> From: eo greensticks <eogreensticks@gmail.com>
> Subject: Re: [papercreters] Re: What is it that shrinks in papercrete?
> To: papercreters@yahoogroups.com
> Date: Saturday, February 26, 2011, 10:12 PM
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> fly ash is used in ceramicrete (magnesium concrete) flyash is
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> byproduct from burning coal-here in Tasmania, coal is mined but
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> exported so fly ash (along with rice hull ash) is not available-what
>
> about wood ash,would that work? i think magnesium cement would be good
>
> in papercretf as the mag cement is keen to bond with fibre where
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> portland apparently actually repels fibre. knowing that, i can't
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> figure why my experiments with paper, sawdust and cloth using portland
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> have worked so well?there is a whole world of concrete chemistry to
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> know...
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> On 2/26/11, Wayne <huon@intas.net.au> wrote:
>
>> Seems a great idea Dan.
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>> Can any sort of ash be used or does it have to be rice hull? Rice is not
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>> grown here but I have access to other organic wastes such as trees.
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>> Wayne
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>>> Check out the following links, for example.
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>>> It seems that rice hull *ash* is usually used as an additive to
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>>> concrete, similar to and possibly better than pozzolan.
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>>> Perhaps you could use both rice hulls and rice hull ash in your mix,
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>>> getting twice the bang for your buck.
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>>> Dan
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