as a dry weight ratio a yard of finished papercrete requires at least
85 lbs.of paper -fire resistance requires at least 3 1/2 sacks of
cement@ 94 lbs each or 330 lbs - so that is like 4 lbs sof cement per
1 lb. of paper- not the other way around - folks are way to cheap with
the portland- carefull -Clyde--- In papercreters@yahoogroups.com,
"Ernie Phelps" <eepjr24@...> wrote:
>
> --- In papercreters@yahoogroups.com, "gmkdart" <gkrautha@> wrote:
> >
> > However, I am concerned about flammability-- it seems the general
> > rule is a 4:1 mix of portland cement to paper. My question is, are
> > these dry weights?
>
> I would look at your source for the 4:1 ratio to answer that question.
> Everyone on the list has slightly different mixes they use in
> different situations. I don't need mine to be fireproof at the moment,
> but I need it to stand up to weather. So I use about 3:1 wet pulp to
> dry portland by volume. For fireproofing, I would probably be inclined
> to up the inerts by adding lime, portland or sand.
>
> - Ernie
>
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