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.”
Sounds to me like someone is trying to justify actually using a tactical, atomic bunker buster.
Lol, they’re gonna do the strategic one next
I never really got why tactical and strategic nukes are so wildly different. Aren’t those words more or less synonyms?
Strategic = Hiroshima getting obliterated
Tactical = The Imperial Palace is obliterated, but rest of Tokyo is mostly intact.
Generally yield and intention difference, strategic takes out cities, tactical takes out factories, military bases and compounds.
Very much not.
Tactical means immediately useful. E.g. use against troops. Strategical means mediately useful. E.g. use against infrastructure and production capacity. Also massively killing civilians. This is where most heinous war crimes live.