Papercreters: [papercreters] Re: weight vs. volume

Wednesday, August 6, 2008

[papercreters] Re: weight vs. volume

Udi:

The density of papercrete can vary dramatically.

The particular recipe being used is probably the biggest variable.
The more mineral content in the mix, the more dense the final product
will become.

The amount of water used to mix the papercrete will not impact the
final density of the papercrete because the excess drains and drys
away. There are exceptions that occur when someone tries to use WAY
too much water and it leaches out a significant portion of the cement
or other mineral content as the excess water drains out. Conversely,
if someone uses far too little water, the fibers won't bond together
as tightly and produce a weak, crumbly, but less dense product.

For the density of the materials you listed:

>1 liter of wet ground paper= how much kg of dry material?
Impossible to estimate. How wet is wet? What kind of paper? Try a
small sample and measure it as you consider it "wet" and dry. That's
the only practical answer to this question.

Range:
1 liter of wet ground paper might yield a few grams of dry paper, or
as much as a half kilogram of dry paper.

> 1 liter of wet PC= how much of dry PC?
see above. It all depends upon how watery you make your mix and what
other ingredients are in the mix.

> 1 liter of OPC= weight?
about 3 lbs 5 oz
or 1.5 kg

> 1 liter of sand= weight?
Different sands have different densities. Measure the sand you
intend to use. Finer grained sands of the same type will weigh more
than coarser grained sands. The finer grain allows the particles to
pack closer together. Coral sands will be lighter than quartz sands
of the same particle size. Wet sand is a lot heavier than dry sand.

Range: 1 to 2 kg/liter

> 1 liter of lime= weight?
very close to one pound or .481 kg

> 1 liter of clay= weight?
Different clays have different densities. Measure the clay you
intend to use. If a dry powder, how fine is the ground powder? A
finer grind will produce a denser powder. If it's a damp or wet
clay, how much water is in it?

A liter of dry clay will be approximately one kg/liter, but it can
vary.
Wet clay will be approximately 1.8 kg/liter, but it will definitely
vary dramatically with the degree of wetness.

The following website may be helpful:
http://www.simetric.co.uk/si_materials.htm

I tried to answer all your questions as best I could. I hope my
answers and explanations help you.

--- In papercreters@yahoogroups.com, "sheelakasha"
<levecosolutions@...> wrote:
>
> Hi everyone
> slurryguy, thanx for reminding us to post individually, not allways
> replying- sometimes a good shake is all I need.
> so I was wandering- does anyone know how much a liter of ready
> papercrete weighs in dry form?
> i'm looking fo the following data:
> 1 liter of wet ground paper= how much kg of dry material?
> 1 liter of wet PC= how much of dry PC?
> 1 liter of OPC= weight?
> 1 liter of sand= weight?
> 1 liter of lime= weight?
> 1 liter of clay= weight?
>
> I have tried to weigh some of the above, but since i don't have
access
> to a reliable set of scale, I'm counting on you guys for help :-)
>
> by the way, I have noticed, to my surprise, that adding clay to a
thin
> layer of PC stucco hardens the mix and dry it more quickly? can
anyone
> answer why? (I've got the idea from the darjit ingrediants)
>
> thanks, udi.
>