[papercreters] Back to the future?

For all those interested in "greener" concrete or portland, here's a story by Business Week about how ancient and durable Roman mixtures are being re-disocvered.

Notably, these didn't use energy intensive kilns in their production (just volcanos).

Thanks!

http://www.businessweek.com/articles/2013-06-14/ancient-roman-concrete-is-about-to-revolutionize-modern-architecture#r=rss



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[papercreters] Papercrete Instructable

Dear All,

Papercrete has been featured in an recent Instructable. See

http://www.instructables.com/id/I-Love-Papercrete/

Ashok
>




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[papercreters] Re: Cooking

Well, if you insist. Just be careful, though. You never know what you might find.

http://www.youtube.com/watch?v=PA1h6Jy7jvU



--- In papercreters@yahoogroups.com, MotherReiver <motherreiver@...> wrote:
>
> We'll, I'll be a knockin' then :)  Thanks for the tip!
>
>



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Re: [papercreters] Re: Cooking

We'll, I'll be a knockin' then :)  Thanks for the tip!

From: spaceman <Spaceman@starship-enterprises.net>
To: papercreters@yahoogroups.com
Sent: Monday, June 10, 2013 2:44 PM
Subject: Re: [papercreters] Re: Cooking

 

Not unless you used white portland. Normally it is gray, concrete colored more or less depending on your paper. Judith has some nice brown walls from using cardboard.

When it sounds like wood when you knock on it, is dry and hard, then it's done. Hard is relative, not like a rock but solid.

On 6/10/2013 1:37 PM, MotherReiver wrote:

What are the characteristics of it being "done" cooking?  I don't want to start the remainder stairs until the lower ones are solid  - does it turn white?

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Re: [papercreters] Re: Cooking

Not unless you used white portland. Normally it is gray, concrete colored more or less depending on your paper. Judith has some nice brown walls from using cardboard.

When it sounds like wood when you knock on it, is dry and hard, then it's done. Hard is relative, not like a rock but solid.

On 6/10/2013 1:37 PM, MotherReiver wrote:

What are the characteristics of it being "done" cooking?  I don't want to start the remainder stairs until the lower ones are solid  - does it turn white?

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Re: [papercreters] Re: Cooking

What are the characteristics of it being "done" cooking?  I don't want to start the remainder stairs until the lower ones are solid  - does it turn white?

From: MotherReiver <motherreiver@yahoo.com>
To: "papercreters@yahoogroups.com" <papercreters@yahoogroups.com>
Sent: Wednesday, June 5, 2013 5:55 AM
Subject: Re: [papercreters] Re: Cooking

 

Thank you  guys for the drying tips! I am letting it dry naturally.  More steps to be dug in and poured this weekend :)

 

--Mother

From: "prrr.t21@btinternet.com" <prrr@talk21.com>
To: papercreters@yahoogroups.com
Sent: Monday, June 3, 2013 5:43 PM
Subject: [papercreters] Re: Cooking

 

Papercrete starts out saturated wet, it just needs to dry. It doesn't behave like concrete. --- In mailto:papercreters%40yahoogroups.com, MotherReiver <motherreiver@...> wrote: > > Man, when I goof I goof!  I do have a group question, should I sprinkle water on these steps once a day like concrete until they are done cooking? >   > HERE is the message I was trying to send the whole group: >   > "Thank you all for the tips! At least the only thing I ruined was a test bowl. > My son came over and helped me start my "stairs" on the raw hill. I made lots > of mud and he had me mix it looser than I was (more water) so he could trowel it > better. We got two of the steps done and I suspect that even though this is out > there in the dry sun, it will eventually dry. I'll post a pic soon. Should I > sprinkle it with water a bit every day like you do concrete? >

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Re: [papercreters] Re: Cooking

Thank you  guys for the drying tips! I am letting it dry naturally.  More steps to be dug in and poured this weekend :)

 

--Mother

From: "prrr.t21@btinternet.com" <prrr@talk21.com>
To: papercreters@yahoogroups.com
Sent: Monday, June 3, 2013 5:43 PM
Subject: [papercreters] Re: Cooking

 

Papercrete starts out saturated wet, it just needs to dry. It doesn't behave like concrete.

--- In mailto:papercreters%40yahoogroups.com, MotherReiver <motherreiver@...> wrote:
>
> Man, when I goof I goof!  I do have a group question, should I sprinkle water on these steps once a day like concrete until they are done cooking?
>  
> HERE is the message I was trying to send the whole group:
>  
> "Thank you all for the tips! At least the only thing I ruined was a test bowl.
> My son came over and helped me start my "stairs" on the raw hill. I made lots
> of mud and he had me mix it looser than I was (more water) so he could trowel it
> better. We got two of the steps done and I suspect that even though this is out
> there in the dry sun, it will eventually dry. I'll post a pic soon. Should I
> sprinkle it with water a bit every day like you do concrete?
>

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