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[-] Gullible@sh.itjust.works 12 points 21 hours ago

Why does this work, exactly?

[-] Nora@lemmy.dbzer0.com 52 points 21 hours ago

It doesn't! (ish)

Sugar can slow down the hardening of concrete, but this is too small of a concentration and even if you do increase the concentration it still hardens which (depending on the application) does not ruin it.

[-] Jiggle_Physics@quokk.au 19 points 20 hours ago

Yes from what I can find, depending on the type of concrete, it takes 4-30lbs of sugar per ton. The point is not to keep it permanently plastic, it will set, but its structural integrity is greatly compromised and it will crumble under stresses far, far, lower than it will need to deal with.

[-] Mouselemming@sh.itjust.works 6 points 19 hours ago

So now you have a prison which will catastrophically collapse upon the prisoners?

[-] Nora@lemmy.dbzer0.com 13 points 18 hours ago

Well no because the other part of this that isnt talked about is... concrete is heavy as fuck, and one ton of concrete is basically nothing size wise. Its more like you have to throw 200lbs of sugar in every truck that arrives at the job site, often with many many trucks.

[-] anomnom@sh.itjust.works 2 points 13 hours ago

That was the red flag when I read this. After letting a few footings for a porch I started till captures how many tins must go into a garage floor slab, let alone a prison in billionaire bunker.

[-] Jiggle_Physics@quokk.au 2 points 19 hours ago

The structural issues would mean they could not get to that point in construction

[-] NCSK@fedia.io 7 points 20 hours ago

what if I drink the concrete before it hardens? will that work?

[-] 0ops@piefed.zip 1 points 2 hours ago

So you've had my biscuits and gravy?

[-] Valmond@lemmy.dbzer0.com 1 points 2 hours ago

You might get constripation.

[-] fyzzlefry@retrolemmy.com 2 points 14 hours ago

The current HHS is probably on board.

[-] Nora@lemmy.dbzer0.com 4 points 20 hours ago

I'm not a doctor but I don't recommend it.

[-] Septimaeus@infosec.pub 3 points 20 hours ago

Depends. How are your calcium levels?

[-] mindbleach@sh.itjust.works 2 points 19 hours ago

They definitely won't be able to use it, and you'll have nothing to worry about.

[-] Nora@lemmy.dbzer0.com 6 points 20 hours ago

There's like a thousand caveats to this though just as an aside. If someone realizes the concrete is tampered with, they're probably tossing the whole batch. It's better to be safe than sorry and they probably don't have time to wait for the lab report on what got added to the mix without their permission.

Not that I'm recommending that people do this, but if you wanted to fuck up concrete I'd think going for a compound that makes it cure faster would be the way to go. Too fast leads to more heat which leads to fractures in the concrete from the intense heat.

[-] chaogomu@lemmy.world 6 points 19 hours ago

Salt. Salt will completely fuck concrete.

There were Chinese construction companies that cut corners and used beach sand instead of more expensive river sand.

The buildings the made are all called Tofu towers or something similar, because you can walk up to the ones still standing and pull chunks off, like they were made of tofu.

[-] Jiggle_Physics@quokk.au 4 points 19 hours ago

This works too. You keep forcing them to toss materials, and delay the building of the prisons.

[-] anomnom@sh.itjust.works 3 points 13 hours ago

So you really just need a few huge empty bags of salt/sand/rice/etc, then get caught sneaking out of the mixing plant.

[-] bacon_pdp@lemmy.world -3 points 20 hours ago

When sugar is added to Portland cement paste at the onset of mixing, hardening may be delayed indefinitely.

Sugar is added to concrete to delay delay curing and improve compressive strength but after 0.06% sugar by weight, compressive strength starts to decrease and after 0.08% sugar by weight setting times dramatically increase.

If you add two pounds of sugar to literally one ton of concrete, it will ruin the concrete and make it unable to set properly. This was used by the French anarchists to resist prison construction.

[-] Cethin@lemmy.zip 12 points 16 hours ago

I'm assuming this is AI generated misinformation that pulled incorrect information from all the reposts. Please stop doing this. AI doesn't know anything and only repeats stuff that is said frequently, which is often wrong, like this case.

this post was submitted on 02 Aug 2026
440 points (93.0% liked)

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