Once upon a time, there was a recipe for doing
papercrete with flyash floating around. Does anyone remember
the recipe? I have come into a way of getting flyash for doing
a lime plaster. I would be very happy to replace my portland
with flyash in my papercrete.
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Dear Kim,
thank you
Dear Kim,
Studies done in India recommend that upto 40% of cement weight can be repalced by fly ash with improved strength.RegardsAshok
I have been looking at the flyash, I will admit
it makes me nervous to work with. It has so many carcinogenic
substances in it. I am not sure I will proceed.
My roof mixture is simple, 50/50 dry paper and cement by
weight. The bottom layer, that is between the rafters is held
in place by a sheet, when dry. We use boards to hold it until
it dries. Then a layer of heavy fencing that is tied down with
plumbing strap, and another 5 inches of paper crete on top of
that, that goes over the rafters. The top coat is petrified
hessian.
Our walls are the same mix of paper and cement,
but we add sand. My mixer nicely handles 30 lbs of paper, so it
gets about 30 pound of cement and ten pounds of sand in the
walls. I found that here where life is very humid, any clay
will start growing. I do not want weeds growing on my walls.
We had tried a reciprocal roof, that failed. And
I didn't like it, the pitch was way too high, so when it failed,
we were not all that upset. Except we wasted a years work on
it. And I had to redo the drawings etc. We have made a few
more changes, the house is growing organically. But, the final
product is getting closer and closer to what I really want.
Hello KimHope things are going well on your project. I finally finished my Papercrete just before Thanksgiving. All and all it was about 2,000 cubic feet to pour. I used a slip form. We poured new Papercrete walls against our existing Mobil home. W' e have free standing Papercrete at the addition. I have enclosed a picture of the form system and the finished pour. I still have to do the skim coat and waterproofing coat.
To the Flyash issue, I have not heard of flyash as a stand alone binder. Typically in concrete it is used as a supplement to cement to reduce the amount of cement required.
Before i began construction on our house i built a barn as my testing lab. for my initial work I tried to maximize paper and minimize binder. I did a mix with lime and wood ash that was very promising. The logistics of trying to get that much ash mad it seem like more than I could manage.
The mix i test was ( by weight)paper 28%clay 40%Wood ash 19%lime 13%This was a stronger product than what i was getting with what I thought was comparable with cement. When I finally got a mix that I thought was what i need i got some compression tests. Compression strength was way too low.
Based on my final cement mix I think you can test a mix with these proportions ( by weight)Paper newsprint) 14%Clay 15%Sand 27%Ash 27%Lime 17%
Please let me know what you come up with.
BestMurry Holley
I have been moving my forms on my walls every 24
hours without a problem. Fill with papercrete, wait 24 hours,
move the forms and fill again.
Hello Murry, Im getting ready to build sound wall to stop traffic noise with slip mold . was curious how long did you wait between lifts.. congrats on your accomplishment. Ive moved to Odem just north of Corpus n later plan to add papercrete building to garage for rental home
On Tuesday, March 27, 2018, 7:37:23 AM CDT, Murry Holley murry....@yahoo.com [papercreters] <paperc...@yahoogroups.com> wrote:
Hello KimHope things are going well on your project. I finally finished my Papercrete just before Thanksgiving. All and all it was about 2,000 cubic feet to pour. I used a slip form. We poured new Papercrete walls against our existing Mobil home. W' e have free standing Papercrete at the addition. I have enclosed a picture of the form system and the finished pour. I still have to do the skim coat and waterproofing coat.
To the Flyash issue, I have not heard of flyash as a stand alone binder. Typically in concrete it is used as a supplement to cement to reduce the amount of cement required.
Before i began construction on our house i built a barn as my testing lab. for my initial work I tried to maximize paper and minimize binder. I did a mix with lime and wood ash that was very promising. The logistics of trying to get that much ash mad it seem like more than I could manage.
The mix i test was ( by weight)paper 28%clay 40%Wood ash 19%lime 13%This was a stronger product than what i was getting with what I thought was comparable with cement. When I finally got a mix that I thought was what i need i got some compression tests. Compression strength was way too low.
Based on my final cement mix I think you can test a mix with these proportions ( by weight)Paper newsprint) 14%Clay 15%Sand 27%Ash 27%Lime 17%
Please let me know what you come up with.
BestMurry Holley
Actually, when the reciprocal roof failed, the
logs floated down, so gently. I had done the math correctly, which
did make me feel good. We went with a temporary answer to the
roof, but as soon as most of it is poured, we will change our
the 4 logs for drill stem, appropriately bent with vines and
leaves. Pictures of the roof soon, we are about to finish a
huge section of it.
We are using an electric system, with a 5HP motor
to pulp our paper. We are recovering about 60% of the water to
be used again. This also saves a lot of work when hauling it up
onto the roof.
We are in Bedias, we welcome visitors. Overnight
guests via hipcamp, so we have liability coverage.