381
In a First, America Dropped 30,000-Pound Bunker-Busters—But Iran’s Concrete May Be Unbreakable, Scientists Say (www.popularmechanics.com)
submitted 2 weeks ago by NoSpotOfGround@lemmy.world to c/technology@lemmy.world
57 comments fedilink hide all child comments

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.”

(page 2) 8 comments
sorted by: hot top controversial new old
[-] Kyrgizion@lemmy.world 1 points 2 weeks ago

I low key assume this means the next strike will be using tactical nukes. This is bad news folks.

load more comments (2 replies)
[-] HappySkullsplitter@lemmy.world 1 points 2 weeks ago* (last edited 2 weeks ago)

Just one followup question: Who cares?

Edit:

Trump didn't give the order to specifically destroy the bunkers

Had that order been given they would have continuously bombed the site(s) until it/they was/were destroyed

Judging by the results of the strike the order seems to be very limited

load more comments
view more: ‹ prev next ›
this post was submitted on 25 Jun 2025
381 points (100.0% liked)

Technology

72865 readers
2268 users here now

This is a most excellent place for technology news and articles.

Our Rules

  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots

founded 2 years ago
MODERATORS
L3s@lemmy.world
enu@lemmy.world
technopagan@lemmy.world
L4s@lemmy.world
L3s@hackingne.ws
L4s@hackingne.ws