RE: [papercreters] Re: Testing R value

My mix for the block used in the burn test was:

1 stack of newspaper 24 inches high

1/2 bag portland cement

2 five gallon buckets pumice fines

I believe Mikey Sklar also has a burn test on Youtube.

So after the testing is done, what then? In my case I use whatever is available so the formula is subject to change. It would be good to have the results as a guideline. Also, I know there have been papercrete houses built with permits here in NM. I'm not sure if any papercrete statistics were provided to the CID or not but I think I can find out.

I am getting ready to work up the energy to maybe start to think about having a meeting with CID to see what would have to be done to get papercrete approved for a load bearing building. There is a lot of info available about Mason Greenstar (commercially manufacturing blocks in TX) on their site and on the patent site. I looked at it the other day but do not have the address in front of me right now. For one thing they call it "load bearing insulation" which I think is a clever thing to do.


Sincerely, Judith

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To: papercreters@yahoogroups.com
From: ronerichter@yahoo.com
Date: Fri, 15 Jan 2010 12:31:02 -0800
Subject: Re: [papercreters] Re: Testing R value

 

Hi Calle,
Yes you are absolutely correct.  The effects of type and amount are what may come out of a good testing program.  I may not be able to test all the parameters of all the different samples, but can do some.  For example, tension tests would be hard for me to accomplish, but compression and shear would be fairly easy.   

Judith has some good data on a burn test but I don't recall the mix.  It would be good to have that as the Portland mix decreased to see where burning becomes a serious safety issue.
Ron

Calle wrote:
 

Spaceman, does the kind of paper matter? I would think that newsprint is more absorbent, cardboard is less refined, magazines have more additives, and office paper another kind of finish or bleaching process.

So they may react differently. Having pulled sheets of paper for "Handmade Paper" cotton does very different than say fiber from bananas, or tree fibers.

So when the discussion is on being consistent, dosen't that mean paper content also?
Thought we read somewhere that the clay content of the glossy magazines did something to the end product.

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