Posted on 04/13/2007 10:37:30 AM PDT by OldGuard1
http://blog.wired.com/defense/2007/04/irans_superconc.html
Iran's Invulnerable Bunkers?
A few weeks back, the Air Force detonated out its most powerful bunker-buster yet. But a new Iranian super-strong concrete might make it almost useless before it reaches service.
Ord_massive_ordnance_penetrator_boe I owe this story to DANGER ROOM reader Jay Sappington, a civil engineer in Fort Worth. He graduated with his masters from the University of Texas at Arlington (UTA), where he had participated in a student competition organized by the American Concrete Institute. The challenge was to make a 2?x2? concrete cube with the highest possible compressive strength. Among the competitors at this internationally diverse school was a team from the University of Tehran. Jay takes up the story.
"I designed a 2?x2? concrete cube with a compressive strength of 16,000 psi [pounds per square inch] at 28-days, a relatively high strength as standard concrete is on the order of 3,000 psi, typically. Now, The University of Tehran made several cubes between 50,000 to 60,000 psi, and possible stronger!
(cont'd)
According to the CIA and FoxNews, they have ONE gas refinery.
LLS
Can we get some input from any engineers out there? This stuff must have drawbacks or we would be using it ourselves.
“Iran makes superhard concrete”
In other news:
“US finalizes work on superhard concrete penetrator”
I get a knife, you get a gun, etc, etc, etc.
Yeah, well we were just testing some super bunker buster, so we’re all back to zero even if this is true.
http://www.ww4report.com/node/3480
Alright. It's one Gasoline refinery. They have many refineries, but all but one are only for crude products.
IMO - desperate propaganda.
Interesting article, but how can a 30,000 lb bomb only have 5,300 pounds of explosives?
” they do have their own refineries”
That will change 5 minutes into the war.
Super hard concrete is between the ears of President Nutjob of Iran.
The largest share of the weight is hardened steel (and concrete?) in the bombs nose.
I’ve been running through this scenario in my mind. Instead of B-2 bombers, we airdrop Bechtel technicians along with the 82nd into one of their remote nuke sites, wipe out the Republican security guards above ground with some A-10’s looking for something to plink, while providing air cover with all our assortment of infinitely superior fighters, and then settle in with an infrastructure of PX’s, bowling alleys and dental clinics to handle the medium-term project of blasting the little rats out of their super-duper concrete rathole.
What could they do? Protest that we were squatting in their remote desert? We could just tell’em to evict us whenever they can must muster up a Marshal.
Come on folks, no need to get your panties in a wad.
Compressive strength tests are conducted with a static fixture and usually a hydraulic setup to generate steadily increasing forces while measuring displacement.
Tensile testing is conducted by pulling samples apart. Flexural strength evaluates how the stuff bends under lateral load...
This is a far cry from impact testing at Mach speeds. Hard materials are generally very brittle, which means they don’t stand up well to impact. Consider a diamond for example, it’s referenced as extremely hard (w/o going into the numbers), yet you can smash one into smitherings with a hammer.
“If it’s true.
Remember, this is a nation so filled with dimwits that it can’t even refine its own petroleum into gasoline.”
You can no longer discount the Supreme Ayotollah and Almanaijeed as ‘dimwits’. Reminds me of Hitler, evil genius who will self-explode himself and millions if not billions of others as they blow up. I suppose Kim Jong-ill is also a dimwit right? Our overconfidence is why the West and Israel have started to put ourselves in a box of either all out attack on these nations leading to a world war or doing nothing but waiting for nuclear attack delivered via terrorist proxy. Perhaps you should read the Art of War or Assymetrical Warfare and see what playbook our enemies are following and we are ignoring.
See, you and I think alike on this.
Every time there is discussion about penetration depth everyone assumes you only get one shot to fully penetrate down to the creamy filling.
No. These weapons are so accurate you lob 3 or 4 of them on top of the same coordinates.
As far as the hard concrete...Creating a small amount of something in a lab environment is a long way from using it for large scale construction.
I thought a Canuck university holds the record for the strongest concrete mix. I could be wrong however. It was then used in a concrete toboggan competition.
Unless you are planning to attack the White House, Republican Lawmakers or Saddam Hussein via a time-travel it should be "Revolutionary Guards". The "Republican" Guards were Saddam's "eltite".
From a DOE website:
"According to Oil and Gas Journal, Iran has a combined capacity of 1.64 million bbl/d. Major refineries include: Abadan (400,000-bbl/d capacity); Isfahan (265,000 bbl/d); Bandar Abbas (232,000 bbl/d); Tehran (225,000 bbl/d); Arak (150,000 bbl/d); and Tabriz (112,000 bbl/d)." - link
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