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Oh really? I honestly never considered that possibility and always thought of concrete as a kind of inert “stone,” I find this legitimately interesting.
My understanding is that the genius of such attacks is they don’t actually have to do the damage but if there’s the fear of chemical damage you don’t want to build the rest of a building on top of it.
This right here is the answer. The possibility that the concrete cure was all or partially disrupted can mean the concrete has to go away and be re-poured.
That would be a great reason to announce the damage as well, which they did.
Check out the Hoover Dam. It’s concrete is still curing to this day!
Stone itself isn’t inert either?