A certain amount of insanity is helpful, perhaps even a prerequisite
for working with papercrete. I'm a primo example of that! :)
Good looking block. Please keep posting your pictures and progress.
There's quite a number of methods to deal with shrinkage issues. It
all depends upon what characteristics you're looking for in the final
product.
Compressing the slurry into the form will make a significant
difference. The more mineral content in the mix the less shrinkage,
but lower R-Value.
Building a form that is appropriately larger than the desired final
product size can also compensate for shrinkage.
--- In papercreters@yahoogroups.com, "mdumiller" <mdmiller1@...>
wrote:
>
> I completed a test pour of a modular papercrete block that would be
> laid up with standard coursing, could contain elec conduit and
> rebar..... it was time consumming. I built the form out of
plywood,
> coated it very heavily with sealer, and it probably won't be able
to be
> used again due to warpage.
>
> Here's some pics:
http://www.domovitae.com/fcrete/
>
> I experienced quite a bit of shrinkage vertically. In rough
numbers
> about 10%, and the mix was very stiff and contained quite a bit of
sand
> and portland. Total dry mix weight including portland, paper,
sand,
> etc... was about 9.5 pounds. Block size 8"x8"x16"
>
> Its a little clunky I had a few gaps in the pour, but generally I'm
> satisfied with the end result.
>
> Welcome comments.... or tell me I'm crazy...... Duane
>
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/papercreters/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/papercreters/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:papercreters-digest@yahoogroups.com
mailto:papercreters-fullfeatured@yahoogroups.com
<*> To unsubscribe from this group, send an email to:
papercreters-unsubscribe@yahoogroups.com
<*> Your use of Yahoo! Groups is subject to:
