1 sack of portland = 1 cubic foot plus 3 cubic feet of sand = standard mortar mix plus paper (maybe 8-9 lbs ) - It can be confusing - for instance above the volume of mortar will run closely with the volume of sand (or other aggregate ) and the portland will pack within the sand- so above we would have 3 cubic feet of mortar, which is 1/9 (3/27ths) of a cubic yard - I used the formula for paper at approx. 80 pounds per yard, and divided by 9 = 8.8 pounds of paper- this is only true if the paper is fully flocculated - here is the rub, if we make 3 cubic feet of mortar we will want an additional 3 cubic feet of pulp ending up with 6 cubic feet of total papercrete- the 80 lb paper per yard is for finished mix (papercrete) so 27 cu. ft. divided by 6 =1/4.5 , divide 80 pounds/ yard by 4.5 = 17.8 lbs of fiber - Tips - skip all the other mixer jargon on this blog and get a standard rolling concrete mixer ( they are cheap used ) the sand and cement (mortar) create a good grinding paste for the paper - Presoak the paper - A tow mixer will only work well for pulping paper - when adding mortar to the equation, I have never seen a tow mixer do a good job - Some friends use a tow mixer to pulp, and then store the pulp in a cheap plastic wading pool, later adding the pulp to the mortar, in a standard concrete mixer
From: trendawareness <trendlinesystems@gmail.com>
To: papercreters@yahoogroups.com
Sent: Sunday, July 1, 2012 8:45 AM
Subject: [papercreters] Re: Compressing Wet Papercrete
>>tests seemed to reveal, somewhat conclusively that a paper pulp briquet looses no insulating value at up to a 50 % high mass filling<<
Very interesting and helpful!
A follow-up question:
I'm currently using a 1:1:1 ratio by weight, paper, portland, sand. So to reduce/eliminate the shrinkage I should go to 1:1:3?
Thanks
Dan
--- In papercreters@yahoogroups.com, "Clyde T. Curry" <clydetcurry@...> wrote:
>
> Hello Alan, This is clydetcurry@... - Fillers generally are effective at controlling shrinkage. Tests between, Barry Fuller (Living In Paper, Zach Rabon and Myself while at Evesgarden, seemed to reveal, somewhat conclusively that a paper pulp briquet looses no insulating value at up to a 50 % high mass filling, ie. Mortar. My base mix of 1 of cements 3 of aggregates (sand, perlite, scoria, pumice or rice hulls) (Mortar) as 50% volumetricly , approx. 80 lbs of newsprint will yeild the other 50% - I promise you this mix will experience very little shrinkage ! Good Luck - Clyde
>
>
> ________________________________
> From: Alan <rustaholic777@...>
> To: papercreters@yahoogroups.com
> Sent: Saturday, June 30, 2012 12:26 PM
> Subject: [papercreters] Compressing Wet Papercrete
>
>
> Â
> Looking at Dan's form I am wondering just how far I would need to compress
> wet papercrete to assure no further shrinkage.
> If I had a form built from 2X12s which are about 11 1/2 inches would compresssing the papercrete to ten inches do it?
> Â
> Alan in MichiganÂ
> Â
> Â
> --- On Wed, 6/27/12, Daniel Ford <trendlinesystems@...> wrote:
>
>
> >From: Daniel Ford <trendlinesystems@...>
> >Subject: [papercreters] Best way to pour a 6" x 12" x 52" block? [2 Attachments]
> >To: papercreters@yahoogroups.com
> >Date: Wednesday, June 27, 2012, 11:12 AM
> >
> >
> >Dear Papercrete Group:
> >
> >I'm working on a project that requires a consistent 6" h x 12" w x 52" l block. I've assembled the molds and have filled the first one to the top and will backfill the shrinkage in a day or two. (see attached photos)
> >
> >My question is whether or not this is the best way to pour a 6" block or should I fill it half way on the first pour? I need to make 50 of these and the sooner the blocks dry the sooner I can complete the project.
> >
> >For background, my mix is 1# paper, 1# portland, 1# sand, .05 # Borax. I live near Cincinnati OH and our summers are hot and humid.
> >
> >Thanks
> >
> >Dan
> >
> >
> >
> >------------------------------------
> >
> >Yahoo! Groups Links
> >
> required)
> >
> >
> >
> >
> >
> >
>
Very interesting and helpful!
A follow-up question:
I'm currently using a 1:1:1 ratio by weight, paper, portland, sand. So to reduce/eliminate the shrinkage I should go to 1:1:3?
Thanks
Dan
--- In papercreters@yahoogroups.com, "Clyde T. Curry" <clydetcurry@...> wrote:
>
> Hello Alan, This is clydetcurry@... - Fillers generally are effective at controlling shrinkage. Tests between, Barry Fuller (Living In Paper, Zach Rabon and Myself while at Evesgarden, seemed to reveal, somewhat conclusively that a paper pulp briquet looses no insulating value at up to a 50 % high mass filling, ie. Mortar. My base mix of 1 of cements 3 of aggregates (sand, perlite, scoria, pumice or rice hulls) (Mortar) as 50% volumetricly , approx. 80 lbs of newsprint will yeild the other 50% - I promise you this mix will experience very little shrinkage ! Good Luck - Clyde
>
>
> ________________________________
> From: Alan <rustaholic777@...>
> To: papercreters@yahoogroups.com
> Sent: Saturday, June 30, 2012 12:26 PM
> Subject: [papercreters] Compressing Wet Papercrete
>
>
> Â
> Looking at Dan's form I am wondering just how far I would need to compress
> wet papercrete to assure no further shrinkage.
> If I had a form built from 2X12s which are about 11 1/2 inches would compresssing the papercrete to ten inches do it?
> Â
> Alan in MichiganÂ
> Â
> Â
> --- On Wed, 6/27/12, Daniel Ford <trendlinesystems@...> wrote:
>
>
> >From: Daniel Ford <trendlinesystems@...>
> >Subject: [papercreters] Best way to pour a 6" x 12" x 52" block? [2 Attachments]
> >To: papercreters@yahoogroups.com
> >Date: Wednesday, June 27, 2012, 11:12 AM
> >
> >
> >Dear Papercrete Group:
> >
> >I'm working on a project that requires a consistent 6" h x 12" w x 52" l block. I've assembled the molds and have filled the first one to the top and will backfill the shrinkage in a day or two. (see attached photos)
> >
> >My question is whether or not this is the best way to pour a 6" block or should I fill it half way on the first pour? I need to make 50 of these and the sooner the blocks dry the sooner I can complete the project.
> >
> >For background, my mix is 1# paper, 1# portland, 1# sand, .05 # Borax. I live near Cincinnati OH and our summers are hot and humid.
> >
> >Thanks
> >
> >Dan
> >
> >
> >
> >------------------------------------
> >
> >Yahoo! Groups Links
> >
> required)
> >
> >
> >
> >
> >
> >
>
__._,_.___
