It's a good idea, Bob, but I think you might have issues on a couple of fronts when it comes to pouring the papercrete in place.
First is the issue of papercrete drying. It would probably take an extended time to dry.
Which brings up the second issue. OSB and extended contact with moisture don't get along too well. The strands delaminate and the material swells. I suspect it's structural integrity would be compromised.
In addition to that, the shrinkage issue would probably come into play.
I would suggest, based on what I know about papercrete, that the best method of constructing a SIP using this material would be to create the papercrete panels without the OSB first, compressing the papercrete to give a consistent size, and to adhere the OSB to the papercrete panels after they've fully dried.
Greg
________________________________
From: Bob <criswells.ok@sbcglobal.net>
To: papercreters@yahoogroups.com
Sent: Friday, February 20, 2009 7:58:28 PM
Subject: [papercreters] Structural Insulated Panels
http://www.achfoam. com/ACH/media/ audiovideo/ SIPs/R-Control/ short_version_ dialup.wmv
I was looking over this site and thought to myself, if papercrete could be poured like the EPS foam between two sheets of OSB, and the shrinkage problem could be solved we could all make our own SIPs (Structural Insulated Panels) which are ICC approved due to the way they are installed in the house walls and roofs. The thought struck me to use Hydrolic Cement instead of plain old Portland, it expands while drying, that might solve the srinkage problem. I'm going to try some experiments and check it out. This could be great if it works. OSB is only about $7.00 a 4x8 sheet that would be 32 sq ft of wall area for under $20.00 including everything that would have to go into it.
Bob
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