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[Ecom] Smart concrete: Iran makes some of the world’s toughest concrete. It can cope with earthquakes and, perhaps, bunker-busting bombs - Page 4

post #31 of 42
wink.gif
Leaving the politcal aside, Iran has been going underground with its sites for many years and we knew it.

All this talk about our MOAB's and current Bunker Busters kind of lame.

Pretty sure, If and when the time comes there is a plan, And the ordinance in place to do the job.
Not everything is leaked to the press.

Isreal hasn't been sitting on thier Butts as to this problem either.
I think the biggest problem faced is the delivery system.

My Take.

Later:D
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post #32 of 42
With technology/engineering such as this, Iran deserves a healthy democratic government where there's a free market of ideas. They seem to be hell bent on destroying Israel which I'm not sure is even possible...
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post #33 of 42
Thread Starter 
Super P (Plasticizers) is what we call it in the Concrete industry, it's an additive for concrete that you basically pour it and forget it, it's self leveling, meaning you do not have to finish it, YAY!

Super P combines concrete with chemicals to produce a really hardened strength, believe me you do not want to have to jack hammer this stuff, super tough! Super P reduces the amount of water needed to produce concrete slabs, because the more water you put in concrete the less strength it has.

Anyway, fiber mesh is an additive to concrete as well, basically it lends concrete more strength, we call it "Hair" which is what you see when you are trying to finish the surface of concrete, this "Hair" is visible, and even after the concrete is hard, you may see these strands / hairs in the finish possibly.

I'm not a scientist, was once looking at a job testing concrete though, it's a rather amazing process, where they pour the concrete in small cylinders and them put them in a machine which puts weight on the concrete to stress it and see what PSI the concrete will break at.

Anything over 13,000 PSI would be like really tough stuff! Basically you could drive tanks over Super P without even cracking it...

I'm not sure what the PSI of concrete would be with Super P & Fiber Mesh, but it would probably be around 14,000 - 16,000, not sure though.

(For those that didn't know it, Concrete will indeed harden completely immersed in water.)

I actually still have my ACI certification book, I studied concrete for 2 months, a fascinating subject, really.


If we could make concrete that hard, we probably wouldn't be replacing roads so often, that would be an extremely valuable tech for countries to learn, Iran ought to consider licensing / selling the patented use of that stuff, I'm sure the Concrete Industry would gobble it up!

A smart concrete company would do well to like go seek out the formula, for sure!
Edited by _GTech - 3/5/12 at 3:25pm
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post #34 of 42
This is nothing new. I ran a Concrete Co for 15 years and we would add Quartz the Concrete in applications such as high strength floors for Meijer and other floors. This is just another way to use it.

LOL, Gtech has his ACI too thumb.gif
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post #35 of 42
Quote:
Originally Posted by The_Hairy_Yak View Post

Anyone else wanting to see the "smart" concrete VS one of those new electromagnetic kinetic energy cannons they are outfitting the new naval ships with? biggrin.gif

I know a few people of creditable orgins telling me those where on 2 ships 5 years ago.....and worked fine when installed its that the vid we see is old testing footage.
    
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post #36 of 42
super plasticizers make the concrete more plastic and workable so the construction workers wont have to add water to sacrifice the strength of the concrete to give it a higher slump/workability.
post #37 of 42
Quote:
Originally Posted by _GTech View Post

If we could make concrete that hard, we probably wouldn't be replacing roads so often

But doesn't that lead to problems with roads cracking due to thermal expansion / contraction? I think they tried making a section of motorway (freeway) out of concrete in the UK a while back - yes it didn't get worn down but the ride comfort, including the noise levels, sucks. It also cracked up pretty badly, and that is in the UK without extreme temperatures.

I realize that things have moved on, I would be interested if this was now a viable alternative to tarmac.
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post #38 of 42
As a construction worker IRL, I'd hate to be the one pouring that **** in Iran. They'll all get lung cancer but it'll be FOR ALLUAH AKBAR
Quote:
Originally Posted by GingerJohn View Post

But doesn't that lead to problems with roads cracking due to thermal expansion / contraction? I think they tried making a section of motorway (freeway) out of concrete in the UK a while back - yes it didn't get worn down but the ride comfort, including the noise levels, sucks. It also cracked up pretty badly, and that is in the UK without extreme temperatures.
I realize that things have moved on, I would be interested if this was now a viable alternative to tarmac.

That's why they put thick, deep cuts into the concrete (usually where lines are marked) to compensate for expansion and to assist in demolition and replacement.
    
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post #39 of 42
Quote:
Originally Posted by GingerJohn View Post

But doesn't that lead to problems with roads cracking due to thermal expansion / contraction? I think they tried making a section of motorway (freeway) out of concrete in the UK a while back - yes it didn't get worn down but the ride comfort, including the noise levels, sucks. It also cracked up pretty badly, and that is in the UK without extreme temperatures.
I realize that things have moved on, I would be interested if this was now a viable alternative to tarmac.

did it snow a lot on that roadway?
post #40 of 42
Quote:
Originally Posted by GingerJohn View Post

But doesn't that lead to problems with roads cracking due to thermal expansion / contraction? I think they tried making a section of motorway (freeway) out of concrete in the UK a while back - yes it didn't get worn down but the ride comfort, including the noise levels, sucks. It also cracked up pretty badly, and that is in the UK without extreme temperatures.
I realize that things have moved on, I would be interested if this was now a viable alternative to tarmac.

Ehh I don't know, Where I live they made a short stretch of highway (links two other highways together) out of concrete probably 10-15 years ago and they have had minimal work done on it except where there are overpasses. Where as the main highways made of asphalt are repaved nearly every two years.
     
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Overclock.net › Forums › Industry News › Technology and Science News › [Ecom] Smart concrete: Iran makes some of the world’s toughest concrete. It can cope with earthquakes and, perhaps, bunker-busting bombs