I am positive this has been tried, but my feeble brain can't remember enough details.
My very vague recollection was that somebody was dipping cardboard sheets into a thin/runny water-cement slurry (no sand), letting them drain for a few minutes, then was rolling them up to make long "logs". After curing/drying the logs were then assembled as stick lumber to form a kind of stud wall.
Then more sheets of dipped cardboard were attached to the cardboard log stud frame as sheathing.
It was an interesting concept, but they didn't have fantastic success with it. It was extremely difficult to get things to stay straight and true. The insulation value was not as high as they had hoped it would be.
Keep in mind that CELLULOSE insulation (paper is cellulose) has a better R-Value when it is tightly packed than when it is loosly packed. Fiberglass insulation is the opposite. It must be kept fluffy or it loses R-Value. This confuses many people who are used to dealing with Fiberglass insulation.
In almost every test I've performed or encountered, compressing papercrete, or any cellulose insulation, will IMPROVE the insulating abilites of the material.
I wish I could remember where I saw the cardboard wall described. It was many years ago when I encountered it. Before this group was formed. Dang my crappy memory. It seems to me it was some kind of college research project, but I could be way off on that part.
In any case, just my personal opinion, I'd rather pulp the cordboard up and make papercrete out of it. It suspect it will be stronger, better insulating, and a lot less fiddly to work with. It also can use any size small scraps of cardboard, even crushed cardboard. Just stay away from Wax Coated cardboard or any other cardboard with a waterproof coating.
Hope this helps.
--- In papercreters@yahoogroups.com, "empiremtn" <empiremtn@...> wrote:
>
> Hi all!
> I'm a newbie here, but have been interested in alternative building methods forever. Question, has anyone tried soaking corregated cardboard with a sand cement mixture so when it dries the corregations provide air spaces for insulation?
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