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Super Concrete - 60,000psi strength in 29 days

10/28/2007 4:22 PM

I came across this post recently regarding a new super concrete out of Iran. During a contest hosted here in the states, the Iranians were able to build several samples of UNREINFORCED CONCRETE that had a 28 day cure strength of 50,000-60,000 psi. That's 2x that of most granite!

The article can be seen here:

http://blog.wired.com/defense/2007/04/irans_superconc.html

This reminds me of a hypothesis about the massive stones in Peru that weigh 20,000 tons each and were stacked 2 high, with such precision you could barely stick a credit card between them. My thought was that these were actually cast in place, perhaps using a similar arrangement (sans the metal fibers used in the Iranian sample).

Does anyone here have any idea how the ancients made such permanent concrete (even if the Peruvian hypothesis is incorrect). Supposedly, according to wikipedia, the mystery on how to form concrete was lost for over a 1,000 years!?!?!?

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#1

Re: Super Concrete - 60,000psi strength in 29 days

10/28/2007 10:01 PM

Dude. Seriously. The ancients used telepathic levitation. Wow. Some people ask the dumbest stuff.


cr3

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#2
In reply to #1

Re: Super Concrete - 60,000psi strength in 29 days

10/28/2007 10:27 PM

...and think of all the great college pranks you could pull off with skills like that...

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#4
In reply to #1

Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 8:55 AM

Oh lay off the "smarter than thou" stuff. The poster is right about ancient concrete tech. People couldn't make Roman concrete for over a thousand years. And there's now a theory that the Egyptians had a form of concrete (that the Romans couldn't reproduce) that's better than anything we can make now, and had been confused for natural stone for centuries.

As far as your dumb questions thing; you may be providing still more evidence that perhaps the ancients were smarter than we are today. Go look up "Y devolution" and meditate on humility.

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#7
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Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 10:24 AM

It was a joke you imbecile.

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#9
In reply to #7

Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 10:37 AM

I've seen similar "jokes" in other posts as well.

I don't see the humor. Perhaps it's not coming off as you intend. It sounds insulting and arrogant.

But I suppose my posts have been thought of as such also, and I'll meditate on my own problems with judgment and respect.

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#10
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Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 11:11 AM

I don't see the humor

I'm sure you don't! Crap. This is becoming quite ridiculous. I am going to check out for another week and when I get back this time I want everything to be like it was before I left the first time!!!

Del, Kris, Eu, et al, what happened? Am I ambisomn.... amssomn....am I sleepwalking? Go ahead wake me up! I can handle it! There's no place like home! There's no place like home! There's no place like home!

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#11
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Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 11:31 AM

What next? Do we attack PWSlack for his funny reply? I'd find it very very hard to take CH Rummel's response as anything other than humorous. It took me about three seconds to read it... and no, I didn't laugh out loud and slap my knee, but I know his intent was to be funny... how can we fault someone for trying to raise a smile?

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#12
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Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 11:41 AM

OK OK OK...I give!

Geez.

I'm sorry I have misinterpreted his noble intentions.

I suppose calling somebody an "imbecile" is a good thing too?

Please advise.

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#13
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Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 11:51 AM

Say Uncle.....say it.....say uncle!!

Hey look. I didn't say I was funny. After being on the threads a while I like to nip some stuff in the bud as well as to, perhaps, spur it to discourse. I also love paranormal, and the wisdom of ancients as well as the idea of lost technologies/civilisations. I am actaully working toward making the study of ancient technology/peoples a full time effort.....I am returning to school after I graduate in December (at age 37) in an effort to get the next foot forward.

So there you have it. And now I'll call off the pack of merciless squirell mercenaries I had dispatched to your house.

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#14
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Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 12:18 PM

Uncle. there. I said it.

But you misspelled squirrel.

I don't so much mind misfired humor, insulting arrogance or name-calling; but such malignant misspelling really gets me mad.

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#15
In reply to #14

Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 1:22 PM

Ha! That's good stuff man. Very well. I will disregard the statement about misfired humor since you avoided, for the most part, my imbecile comment.

Now about the spelling of squirrel....uh....Uncle!

I once read some calculations regarding distance, time and work required to accomplish various feats of engineering. I haven't the time to go through my library now, but it was truly staggering. Perhaps I will begin a new thread pointed more toward the subject directly.

In the meantime I will renew my subscription to the Anti-pedantry Society.

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#16
In reply to #14

Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 7:39 PM

"misspelled squirrel" ...duh-huh... and, regarding

"I am actaully working toward making the study of ..." ...would that be...SPELLING?

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#17
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Re: Super Concrete - 60,000psi strength in 29 days

10/30/2007 1:47 PM

I do not neeed to werk on my spelleng. Ya'll can kiss my Texas butt!

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#6
In reply to #1

Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 10:19 AM

Have a toke?

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#3

Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 5:17 AM

The poster isn't aware of some foundations for a garden wall that took 2 days to break up with a 2.5kW electric breaker recently......

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#5

Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 10:14 AM

Thanks Andy, my initial urge was to respond in kind, but I was hoping to have discussions with intelligent individuals and not banter with egocentrists.

As for PW Slack, are you on something?! I'm not sure where you were heading with your foundation comment.

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#8
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Re: Super Concrete - 60,000psi strength in 29 days

10/29/2007 10:25 AM

Apparently, someone found some incredibly strong concrete-of-the-ancients at 51:45:11N, 0:34:40E, 14m above Newlyn Datum sea level; and had a hard time breaking it up; probably to study its composition.

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