Papercreters: [papercreters] Re: Horizontal Presses vs Vertical

Monday, December 1, 2008

[papercreters] Re: Horizontal Presses vs Vertical

Hi what about using the truck box to press panels,line the bottom
with puck board and devise a way for it to slid out. Clair

-- In papercreters@yahoogroups.com, "Janoahsh" <janoahsh@...> wrote:
>
> WOW, talk about overkill, a multi stage dump truck ram could
probably
> compress wall panels. And only work a few inches of it.
>
> I like it!
>
> Rice hull fly ash is one of the best pozzelons available and can be
mixed as
> 60 or more % replacement for cement be stronger and more resilient.
>
> The Ferrocement Net discussion group Archives have some information
on wood
> and sawdust cement composites, and I have a few files saved on my
hard
> drives.
>
> It has lots of merit but is another whole field of study not much
different
> than papercrete. Fresh Saw dust and wood chips need to be aged or
leached.
>
> I believe you can use a sand clay soil and rice hull fly ash to
make your
> own cement without Portland but haven't had time to try it yet.
What you
> get from the rice Hull ash is reactive silica's that can combine
with the
> silica's and minerals in your clay soils to form molecular bonds
along with
> water as a catalyst which in the right proportions can form a
useful mortar
> reinforced with wood fibers. Strength, insulation, fire
resistance, and
> other characteristics vary by constituent percentages.
>
> Pure pozzelon reactions are much slower than Portland cement
reactions but
> can be ultimately stronger.
>
>
>
>
>
> _____
>
> From: papercreters@yahoogroups.com
[mailto:papercreters@yahoogroups.com] On
> Behalf Of peddler8111
> Sent: Sunday, November 30, 2008 9:48 PM
> To: papercreters@yahoogroups.com
> Subject: [papercreters] Horizontal Presses vs Vertical
>
>
>
> From my understanding the advantage of a horizontal press is it
> compresses from the edge of the block and therefore gives a
consistent
> thickness so dry stacking is possible. Does anyone know why a
vertical
> press could not do the same thing? I could build it horizontally
but I
> don't see why I need to as long as the molds and the piston are
> designed to guarantee consitent thickness by compressing from the
> edge or the end of the block..
> I am trying to engineer a small hydraulic or air over hydraulic
press.
> If I get serious about a big high production press I was thinking
> about rebuilding the hydraulic pump and cylinder from an old Chevy
> dump truck
> to use. The power would be great enough to compress a half a dozen
> blocks at one time or one huge one. I was thinking that I could
could
> make the big blocks to sell the states for temporary road
construction
> barriers.
> What they use now is concrete or plastic barriers {filled w/water}
> which are certainly not real green and I have easy access to paper
and
> a hammer mill, sawdust wood chips,, fly ash and rice hulls and could
> make them 1/2 the weight of the concrete and a whole lot more
giving
> in case of impact than the concrete.
>
>
>
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