Thanks Jay and Tina for the kind words. I truly love PC, when I was
working for the City of Sayre, I used it on several of my building
project for them. It is truly an amazing product, to be able to form it
into walls, compress it into blocks, pour it into stones, apply it as
stucco, use it as mortor to adhere blocks or stones or spray it through
a hopper. No other product I've ever heard of can do all that.
My enclouser wall was poured 12" thick, my stones are at least 2 to 2
1/2 inches thick, they are applyed to both sides of the wall making the
wall at least 16" thick. During our last blizzard, we received 4' drifts
up banked up against that wall and I contintued to work on the inside of
my wall laying stones, keep in mind the wall is in direct contact with
the weather outside. That wall was no colder than any exterior wall of
my house that is not in direct contact with the outside. The stones
stuck just as if it had been a nice warm summer day outside. The R
factor of my wall must be really high, my formula is not quite the same
as most others but I will wager that my R factor and sheer strength is
is as good as anybodys.
You will notice my electrical wire running under the stones, I forgot to
embed the wire in the wall and had the idea to just screw it to the PC
wall and cover over it with stones. It worked great and the wire will be
at least 2" deep in the finished wall, thats at least as good as a 2x4
stick framed wall.
Speaking of screwing, when I have a larger stone that I have doubts
about, I just put morter on the back and set it in place and using a 3"
screw I screw it to the PC wall. AMAZING STUFF!
Thanks again
Bob the builder
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Tuesday, February 19, 2013
[papercreters] Re: underground papercrete house? How do I waterproof it?
I almost forgot Merlex. They make a good water resistant stucco as well that would go very well over a papercrete substrate with a little reinforcement of course:
http://www.merlex.com/extstuc_basex.htm
I believe Steve over at http://www.flyingconcrete.com/ goes over some of these issues with portland based concrete and stucco's as well. He has built alot of those barrel (nubian vaults) you guys were talking about. Click on vaults, and then find his underground wine cellar made of two thin shell vaults.
Tad
--- In papercreters@yahoogroups.com, Ron Richter <ronerichter@...> wrote:
>
> Tad,
> Can you expand on this "then a thin player of latex based stucco material over that." Â Can you remember product names and formulae?
> Thanks
>
>
> ________________________________
> From: zenseeker70 <mrinnovation@...>
>
>
> Â
> There are multiple ways to waterproof porous materials like papercrete, but they cost up to 25 percent of the cost of the building in many cases. When I used to be in the waterproof decking and basement sealing business back in the 1980's we used different methods:
>
> 1. Multi-Chem. This is a thick rubber membrane that goes in in 10 mil thickness depending on substrate. It is solvent based and is rolled on or sprayed on with airless sprayers. This stuff was over 120 dollars per 5 gallon back in the 80's but it made any concrete, wood, or fiber reinforced surface absolutely waterproof for decades of foot traffic. You could also spray it onto block wall basements and it would perform the same. No amount of groundwater would penetrate the membrane, even after decades. The company has since been sold to Haliburton, but the product is now made by other companies for basement sealing. It is grey to blue in color, and requires acetone to thin it and clean up, and respirators are a must for application. Very nasty stuff but it gets the job done every time.
>
> 2. EPDM rubber membrane we used on basement walls and they were glued into place with at least 2 inches of overlap on the seams.
>
> 3. Partial waterproofing can be done by using a closed cell polyurethane foam over the substrate, then a thin player of latex based stucco material over that. This allows backfill without puncturing the material. This system is still used in the monolithic underground dome buildings I've seen built over the years. Sometimes the airform is left in place and that provides the waterproofing over the closed cell foam.
>
> 4. Old school methods such as tar and bituminous might work with papercrete but would take some experimentation and would degrade faster than other methods.
>
> http://www.undergroundhousing.com/
>
> The groundwater level like other have mentioned is a big issue. Up here in the white mountains of Arizona it's not a problem since we have water at 350-750 feet and one of the driest environments in the world, but in Texas with shallow ground water, I think I would have to side with others that it would be risky to build this way with papercrete, unless you have sealed outer walls made of 8x8x16 block, then waterproofed as I have outlined above. The papercrete in this case would only be used for a thermal break from ground to help inside temperatures.
>
> Tad
>
> --- In papercreters@yahoogroups.com, "waterengineman101" wrote:
> >
> > Hello people. Long time no see! Well guys work and daily life gets in my fasinasion about papercrete a lot so I end up not getting to spend much time on it. However soon (like in 2 months) I will be able to start my house. As you should know, the earth is absolutely the best insulater against the heat of summer (think, far south texas, 100 degrees everyday for months on end...for real!). And, I have access to a backhoe and can operate it. AND, if its underground I won't have to pay taxes on it. So here's the BIG question. What is a sure fire no guessing truely proven way to make papercrete waterproof? Now I want to clearify. I don't mean I want to know if it will work just a little bit, I want to know it will work FOR SURE! no cactus juice works well, no I heard you use linseed oil...I need it to actually BE waterproof as now I am concidering building the house underground. To ease fears, I allready think I know about how to keep it from colapsing
> in. right now I am only researching on how to make papercrete WATERPROOF. Totally waterproof, no seapage, No dampness threw the wall...TOTAL waterproofing. NOW.....can anybody tell me what I need to know. I will await an answer and I will check back after work today. Thanks for your time.
> >
> > s.
> >
>
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[papercreters] Re: underground papercrete house? How do I waterproof it?
Sure. Most of the stucco base coat products on the market are made for water resistance, and typically use latex additives, which also improve workability. Some are even supposed to be water proof. Most all of the additives (I.E. Sika) create a polymer-modified concrete which is at least water resistant. At the batch plant it was very common to add these to our mixes for cold weather and where we knew there would be constant freeze/thaw standing water. It reduces the probability of spalling and other concrete defects from freeze/thaw cycles. Latex polymers also reduce or eliminate the need to vibrate around reinforcement structures (rebar).
If using Portland based cements a superplasticizer can greatly reduce the water absorption rates.
http://usa.sika.com/en/solutions_products/02/Concrete_Admixtures/02a001sa38/02a001sa38100/02a001sa38106.html
Grancrete is also an option if you are close enough to a distributor since by nature it's hydrophobic. A thin layer of Kool-seal or similar would guarantee waterproofing.
Mixing a batch of polymerized stucco is not difficult, you simply mix the stucco as normal and then add the admixture (which is almost always just latex and an alcohol as a wetting agent).
Check out the Sika products. I've used them alot with very good results. I put a water tank 7 feet down into the ground for temperature stabilization and then poured polymer-modified concrete around it. Worked very well and you notice even after getting wet, freezing, and then thawing, it does not retain the water.
Tad
--- In papercreters@yahoogroups.com, Ron Richter <ronerichter@...> wrote:
>
> Tad,
> Can you expand on this "then a thin player of latex based stucco material over that." Â Can you remember product names and formulae?
> Thanks
>
>
> ________________________________
> From: zenseeker70 <mrinnovation@...>
>
>
> Â
> There are multiple ways to waterproof porous materials like papercrete, but they cost up to 25 percent of the cost of the building in many cases. When I used to be in the waterproof decking and basement sealing business back in the 1980's we used different methods:
>
> 1. Multi-Chem. This is a thick rubber membrane that goes in in 10 mil thickness depending on substrate. It is solvent based and is rolled on or sprayed on with airless sprayers. This stuff was over 120 dollars per 5 gallon back in the 80's but it made any concrete, wood, or fiber reinforced surface absolutely waterproof for decades of foot traffic. You could also spray it onto block wall basements and it would perform the same. No amount of groundwater would penetrate the membrane, even after decades. The company has since been sold to Haliburton, but the product is now made by other companies for basement sealing. It is grey to blue in color, and requires acetone to thin it and clean up, and respirators are a must for application. Very nasty stuff but it gets the job done every time.
>
> 2. EPDM rubber membrane we used on basement walls and they were glued into place with at least 2 inches of overlap on the seams.
>
> 3. Partial waterproofing can be done by using a closed cell polyurethane foam over the substrate, then a thin player of latex based stucco material over that. This allows backfill without puncturing the material. This system is still used in the monolithic underground dome buildings I've seen built over the years. Sometimes the airform is left in place and that provides the waterproofing over the closed cell foam.
>
> 4. Old school methods such as tar and bituminous might work with papercrete but would take some experimentation and would degrade faster than other methods.
>
> http://www.undergroundhousing.com/
>
> The groundwater level like other have mentioned is a big issue. Up here in the white mountains of Arizona it's not a problem since we have water at 350-750 feet and one of the driest environments in the world, but in Texas with shallow ground water, I think I would have to side with others that it would be risky to build this way with papercrete, unless you have sealed outer walls made of 8x8x16 block, then waterproofed as I have outlined above. The papercrete in this case would only be used for a thermal break from ground to help inside temperatures.
>
> Tad
>
> --- In papercreters@yahoogroups.com, "waterengineman101" wrote:
> >
> > Hello people. Long time no see! Well guys work and daily life gets in my fasinasion about papercrete a lot so I end up not getting to spend much time on it. However soon (like in 2 months) I will be able to start my house. As you should know, the earth is absolutely the best insulater against the heat of summer (think, far south texas, 100 degrees everyday for months on end...for real!). And, I have access to a backhoe and can operate it. AND, if its underground I won't have to pay taxes on it. So here's the BIG question. What is a sure fire no guessing truely proven way to make papercrete waterproof? Now I want to clearify. I don't mean I want to know if it will work just a little bit, I want to know it will work FOR SURE! no cactus juice works well, no I heard you use linseed oil...I need it to actually BE waterproof as now I am concidering building the house underground. To ease fears, I allready think I know about how to keep it from colapsing
> in. right now I am only researching on how to make papercrete WATERPROOF. Totally waterproof, no seapage, No dampness threw the wall...TOTAL waterproofing. NOW.....can anybody tell me what I need to know. I will await an answer and I will check back after work today. Thanks for your time.
> >
> > s.
> >
>
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Re: [papercreters] Re: underground papercrete house? How do I waterproof it?
From: zenseeker70 <mrinnovation@frontiernet.net>
1. Multi-Chem. This is a thick rubber membrane that goes in in 10 mil thickness depending on substrate. It is solvent based and is rolled on or sprayed on with airless sprayers. This stuff was over 120 dollars per 5 gallon back in the 80's but it made any concrete, wood, or fiber reinforced surface absolutely waterproof for decades of foot traffic. You could also spray it onto block wall basements and it would perform the same. No amount of groundwater would penetrate the membrane, even after decades. The company has since been sold to Haliburton, but the product is now made by other companies for basement sealing. It is grey to blue in color, and requires acetone to thin it and clean up, and respirators are a must for application. Very nasty stuff but it gets the job done every time.
2. EPDM rubber membrane we used on basement walls and they were glued into place with at least 2 inches of overlap on the seams.
3. Partial waterproofing can be done by using a closed cell polyurethane foam over the substrate, then a thin player of latex based stucco material over that. This allows backfill without puncturing the material. This system is still used in the monolithic underground dome buildings I've seen built over the years. Sometimes the airform is left in place and that provides the waterproofing over the closed cell foam.
4. Old school methods such as tar and bituminous might work with papercrete but would take some experimentation and would degrade faster than other methods.
http://www.undergroundhousing.com/
The groundwater level like other have mentioned is a big issue. Up here in the white mountains of Arizona it's not a problem since we have water at 350-750 feet and one of the driest environments in the world, but in Texas with shallow ground water, I think I would have to side with others that it would be risky to build this way with papercrete, unless you have sealed outer walls made of 8x8x16 block, then waterproofed as I have outlined above. The papercrete in this case would only be used for a thermal break from ground to help inside temperatures.
Tad
--- In papercreters@yahoogroups.com, "waterengineman101" wrote:
>
> Hello people. Long time no see! Well guys work and daily life gets in my fasinasion about papercrete a lot so I end up not getting to spend much time on it. However soon (like in 2 months) I will be able to start my house. As you should know, the earth is absolutely the best insulater against the heat of summer (think, far south texas, 100 degrees everyday for months on end...for real!). And, I have access to a backhoe and can operate it. AND, if its underground I won't have to pay taxes on it. So here's the BIG question. What is a sure fire no guessing truely proven way to make papercrete waterproof? Now I want to clearify. I don't mean I want to know if it will work just a little bit, I want to know it will work FOR SURE! no cactus juice works well, no I heard you use linseed oil...I need it to actually BE waterproof as now I am concidering building the house underground. To ease fears, I allready think I know about how to keep it from colapsing in. right now I am only researching on how to make papercrete WATERPROOF. Totally waterproof, no seapage, No dampness threw the wall...TOTAL waterproofing. NOW.....can anybody tell me what I need to know. I will await an answer and I will check back after work today. Thanks for your time.
>
> s.
>
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Re: [papercreters] Re: Rapidset cements and papercrete
Hi,
Ah, ok. Different formulation than we have here in the U.S. The Calcium based stuff is made in China and imported for Home Depot, Lowes and other home improvement stores. I guess down in Oz they are making their own formula based on Magnesium. The Ammonia based cement is not the best type. I'm surprised they are making that formula.
> the rapidset concrete i used was Rapidset *60* and it said on the front of
The Mg based cements with Ammonia have water absorption problems and are not to be used in wet environments without sealing. They cannot be used underwater like other formula's either. And like you said they give off Ammonia gas while they cure. It appears to me after some research that the only attractive formula is Mgo using Mg Phosphates for the reaction. All formula's however do bond well with paper and other fibers. Far better bonding strength than Portland.
Tad> wrote:
> the bag that it was mag phos cement based- it definitely
>
> had ammonium something in it- hopefully not ammonium sulfate bit rather
> ammonium phosphate-unpleasant smell and generally
>
> unpleasant as well as expensive. i tried to look at the information sheet
> to see what else was in it but you had to register and i got
>
> an error page. i gave up then as i wouldn't wish to use it again. i just
> hope it holds as the $80 core of the plinth for my current
>
> sculpture as a retrofit would be quite impossible!
>
> cheers, eo
>
> On Sun, Feb 17, 2013 at 10:20 PM, zenseeker70
>
> > **
> >
> >
> > Hi,
> >
> > It looks like the rapidset cements are actually Calcium Sulfoaluminate
> > Cement and not MgO based. If this is the case then Rapidset should react
> > with Zinc coatings, but I have not heard of MgO not being compatible with
> > chicken wire and other galvanized coatings. Calcium Sulfoaluminate Cements
> > also reach a high early strength similar to MgO and should be compatible
> > with paper fibers as well. Might be worth a try.
> >
> > http://www.ctscement.com/Cement_MSDS.asp
> >
> > Tad
> >
> >
> >
>
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Re: [papercreters] Re: underground papercrete house? How do I waterproof it?
Yes...maybe it could. Do you have a link for it??
--- In papercreters@yahoogroups.com, Devonia wrote:
>
> Owens builds earth bags homes under ground maybe his site could help you
>
> Devonia
>
> On Feb 18, 2013, at 5:53 AM, "waterengineman101" wrote:
>
> > Hello people. Long time no see! Well guys work and daily life gets in my fasinasion about papercrete a lot so I end up not getting to spend much time on it. However soon (like in 2 months) I will be able to start my house. As you should know, the earth is absolutely the best insulater against the heat of summer (think, far south texas, 100 degrees everyday for months on end...for real!). And, I have access to a backhoe and can operate it. AND, if its underground I won't have to pay taxes on it. So here's the BIG question. What is a sure fire no guessing truely proven way to make papercrete waterproof? Now I want to clearify. I don't mean I want to know if it will work just a little bit, I want to know it will work FOR SURE! no cactus juice works well, no I heard you use linseed oil...I need it to actually BE waterproof as now I am concidering building the house underground. To ease fears, I allready think I know about how to keep it from colapsing in. right now I am only researching on how to make papercrete WATERPROOF. Totally waterproof, no seapage, No dampness threw the wall...TOTAL waterproofing. NOW.....can anybody tell me what I need to know. I will await an answer and I will check back after work today. Thanks for your time.
> >
> > s.
> >
> >
>
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