Papercreters: [papercreters] Re: fire-proofing, etc.

Saturday, June 12, 2010

[papercreters] Re: fire-proofing, etc.

oddly i was kinda thinking about this . not as much as fireproofing but that is a consideration. i was thinking that one .. there is a HUGE amount of junk drywall tossed into a hole so cheap /free, bonding(to wood and maybe paper and other additives, etc), and mineral content for fire etc
on the downside they use 2-10% gypsum in cement to slow it down which may alter the chemistry in a bad way. testing is needed. although they sell gypsum new and recycled as in new unused recycled its peletized. really a extra step for other uses. which brings us how to break up drywall into a powdery form to use.

--- In papercreters@yahoogroups.com, "germeten" <germeten@...> wrote:
>
> Hi all, this is my first post, be gentle!
>
> Several observations made before joining this forum. Henley's Manual has a recipe for fire-proofing:
>
> "Paper is rendered fireproof by saturating with a solution of:
>
> Ammonium sulfate 8 parts
> Boric acid 3 parts
> Borax 2 parts
> Water 100 parts
>
> This is very similar to the formula for hardening gypsum:
>
> "Dissolve boric acid in hot water and add sufficient ammonia water to
> the solution that the borate at first separated is redissolved. The
> gypsum to be cast is stirred with this liquid or the gypsum once dried
> is painted with the solution which is quickly absorbed. Articles
> treated this way are as hard as stone."
>
> So maybe adding gypsum to paper-crete is the way to go.
>
> I experimented making paper-crete molds and found that by adding
> slaked lime, the paper (which is mostly carbon) bonds with the
> lime over time to form calcium-carbonate (rock) which doesn't
> support combustion. I used about a third lime to portland. Possible
> to treat with borates afterwards, if still found necessary.
>
> Portland and gypsum could be the ticket.
>
> And lastly, during the middle ages, mortar for cementing stones was made with a combination of unslaked lime and boiled oil which held
> the stone. Chemistry is similar: Hungry lime + hungry hydrocarbon =
> calcium-carbonate stone. This would make a fine coating for exterior
> and inside plaster for papercrete structures, and I'll bet deep-fry
> grease from restaurants could serve as the boiled oil.
>