--- In papercreters@yahoogroups.com, "Janoahsh" <janoahsh@...> wrote:
>
> The idea that papercrete is not concrete and therefore doesn't act
> like concrete has me confused.
> How does the cement work?
> Does it make a cement sand matrix around the paper fibers or does
> it make disconnected particles within the paper fiber mix?
> Does it do both.
I don't think anyone on the list has a definitive answer that has been
independently validated. Some folks think (and I lean this way) that
at "normal" papercrete rations (10-50% cement) the cement permeates
the paper and bonds with it and any other aggregates to form a matrix
that takes some properties from both wood and concrete, varied by the
exact percentages and additives used.
Wood pulp (an by extension paper) will form matrices on it's own, if
allowed to. Compression can enhance this effect. These properties can
be seen in many commercial products such as particle board, OSB, etc.
In papercrete we are merely using cement as the binder instead of
epoxy or other alternatives. That is why slurryguy and other say the
product performs more like wood than concrete.
> It seems that the percentage of cement used would govern the answer.
> My next question is where are the mix formulas in relation to the
> answer.
Since I am not even sure I aswered the first questions to your
satisfaction I am not even going to attempt the next. heh.
- Ernie
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