In a First, America Dropped 30,000-Pound Bunker-Busters—But Iran’s Concrete May Be Unbreakable, Scientists Say
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schrieb am 25. Juni 2025, 20:30 zuletzt editiert von
Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 20:47 zuletzt editiert vonImpressive.
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 20:59 zuletzt editiert vonFrom this article it sounds very likely that the bunker buster attack failed.
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 21:04 zuletzt editiert von unexposedhazard@discuss.tchncs.deBasically they used pyramid age tech to outplay billions of dollars worth of weapons tech.
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Basically they used pyramid age tech to outplay billions of dollars worth of weapons tech.
schrieb am 25. Juni 2025, 21:06 zuletzt editiert vonHardly. Did you read the article?
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 21:12 zuletzt editiert vonI sure would like to read this article, it seems fascinating, but it's paywalled.
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Hardly. Did you read the article?
schrieb am 25. Juni 2025, 21:17 zuletzt editiert vonThe greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers.
Fiber reinforcment is thousands of years old.
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 21:24 zuletzt editiert vonThey used nagarjuna cement
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 21:24 zuletzt editiert vonNothing is unbreakable.
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schrieb am 25. Juni 2025, 21:26 zuletzt editiert von
And no bomb is irresistible.
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Nothing is unbreakable.
schrieb am 25. Juni 2025, 21:26 zuletzt editiert vonExcept for my spirit.
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 21:28 zuletzt editiert vonHa ha yea go iran! Fuck the west and their imperialist bull!
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From this article it sounds very likely that the bunker buster attack failed.
schrieb am 25. Juni 2025, 21:28 zuletzt editiert vonAnd I read that the US used more than half of its stock of these bunker-buster bombs in this attack, the largest conventional bunker-busters in existence. So they can't simply try again.
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Hardly. Did you read the article?
schrieb am 25. Juni 2025, 21:29 zuletzt editiert von fondots@lemmy.worldSo I did not read the article because of a paywall I'm too lazy to circumvent right now
But from OP's summary, the main technology they're talking about is concrete reinforced with steel or other fibers.
And that's definitely more advanced than "pyramid age"
But it's also pretty much a direct descendant of mud brick reinforced with straw which humanity has been using since well before the pyramids. Same basic concept, different materials.
So yes and no.
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From this article it sounds very likely that the bunker buster attack failed.
schrieb am 25. Juni 2025, 21:32 zuletzt editiert vonI mean they usually only do about 30 damage anyways.
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Previously, a yield strength of 5,000 pounds per square inch (psi) was enough for concrete to be rated as “high strength,” with the best going up to 10,000 psi. The new UHPC can withstand 40,000 psi or more.
The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers. These fibers hold the concrete together and prevent cracks from spreading throughout it, negating the brittleness. “Instead of getting a few large cracks in a concrete panel, you get lots of smaller cracks,” says Barnett. “The fibers give it more fracture energy.”
schrieb am 25. Juni 2025, 21:33 zuletzt editiert vonI low key assume this means the next strike will be using tactical nukes. This is bad news folks.
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The greater strength is achieved by turning concrete into a composite material with the addition of steel or other fibers.
Fiber reinforcment is thousands of years old.
schrieb am 25. Juni 2025, 21:39 zuletzt editiert vonCalling that pyramid age I think is a little disingenuous, they didn’t have 40,000 psi concrete back in those days.
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Except for my spirit.
schrieb am 25. Juni 2025, 21:39 zuletzt editiert vonYou can't break what is already broken
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Except for my spirit.
schrieb am 25. Juni 2025, 21:39 zuletzt editiert vonSomeone, somewhere, said they don't like you.
Now CRY!
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Someone, somewhere, said they don't like you.
Now CRY!
schrieb am 25. Juni 2025, 21:40 zuletzt editiert vonEveryone likes me.