this post was submitted on 17 Jul 2026
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[–] KairuByte@lemmy.world 26 points 1 month ago (13 children)

I feel like none of these things will actually weaken concrete, unless it’s being added to the concrete mix itself.

[–] FiniteBanjo@feddit.online 30 points 1 month ago (12 children)

The concrete is actually highly acidic but the outer layer cures to become alkaline and the two layers together end up becoming water resistant, so by adding acid to the surface it can lose its water repellent capability and weaken faster.

If the concrete were sealed with a wax or an acrylic then Acetone would also be effective.

[–] KairuByte@lemmy.world 11 points 1 month ago (5 children)

Oh really? I honestly never considered that possibility and always thought of concrete as a kind of inert “stone,” I find this legitimately interesting.

[–] Maestro@fedia.io 11 points 1 month ago

Check out the Hoover Dam. It's concrete is still curing to this day!

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