Comment on We Finally Know How Ancient Roman Concrete Was Able to Last Thousands of Years

• BlueEther@no.lastname.nz ⁨9⁩ ⁨months⁩ ago

  Quick lime as a ‘concrete’ is nothing new, or newly rediscovered though… The story seems to come up every few years, and anyone that has used a fluidised lime boiler knows how good quick lime is at forming concrete.

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  • Brcht@lemmy.world ⁨9⁩ ⁨months⁩ ago

    And, coincidentally, every time the story comes up there’s a company ready to sell you the magic roman concrete.

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  • Deebster@programming.dev ⁨9⁩ ⁨months⁩ ago

    Yeah, I was thinking it’s like the “Voyager Has Left the Solar System” story - we’ve heard that several times over the years, and probably will again.

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    • GreatAlbatross@feddit.uk ⁨9⁩ ⁨months⁩ ago

      To be fair, we keep expanding what we class as the solar system. Poor old voyager keeps getting the goalposts moved!

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      • baronofclubs@lemmy.world ⁨9⁩ ⁨months⁩ ago

        The year is 76,014. Voyager still hasn’t left the solar system. Also, the solar system now contains Proxima Centauri.

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  • SoylentBlake@lemm.ee ⁨9⁩ ⁨months⁩ ago

    What is that, like 12 people now?

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• KpntAutismus@lemmy.world ⁨9⁩ ⁨months⁩ ago

  that’d be great, a lot of buildings are torn down just because the concrete cracks.

  i’d be interested in seeing how using better concrete impacts overall costs and of course emissions. because the building ends up standing for a lot longer, the temperature isolation becomes very sub-par over time. that would increase total energy consumption compared to buildings that are frequently rebuilt.

  but very promising.

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  • Hyperreality@kbin.social ⁨9⁩ ⁨months⁩ ago

    Meh. Lime mortar absorbs and releases moisture. I wouldn't be surprised that roman concrete is much the same.

    Don't get me wrong, I'm a huge fan, but that kind of thing isn't compatible with modern insulation. You end up with damp and mould issues in the walls.

    Sure it works great in uninsulated stuff though.

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    • veroxii@aussie.zone ⁨9⁩ ⁨months⁩ ago

      Also we only see the few structures which survived. 99%+ did not make it 2000 years.

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    • grue@lemmy.world ⁨9⁩ ⁨months⁩ ago

      Sure it works great in uninsulated stuff though. But people and governments want every room in a building to be insulated nowadays. The whole one warm room, the rest of the building is cold and you’d better wear a three piece suit or heavy wool jumper thing, is abhorrent to our spoiled western arses.

      Spoken like somebody who doesn’t live where rooms would be intolerably hot without insulation most of the year.

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