Engineers Just Made Concrete 30% Stronger. The Secret Ingredient? Coffee. - eviltoast
  • anon6789@beehaw.org
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    1 year ago

    I’m glad to see research into this. Sand for concrete is a specific type of sand (nice and bumpy so it likes to lock together like a jigsaw puzzle) and people get killed by what are basically sand cartels. This was the “legitimate” mob business in the last season of Barry.

    Portland cement is about 2/5 sand, so we’ll need to start drinking more coffee! I was glad to see they’re testing other organic matter since coffee is very susceptible to climate change, ironically caused in a large part by cement production. Unless you believe the reader comment on the article begging people to realize climate change is a hoax…

    • TheCalzoneMan@beehaw.org
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      1 year ago

      And I’ve already reported it as misinformation. Nice when a website lets you report stuff without having an account.

      • anon6789@beehaw.org
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        1 year ago

        Nice work. I tried to thumbs down it, but it wanted a log in.

        It’s a shame someone can read articles from decent sources and still be so ignorant.

    • Overzeetop@beehaw.org
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      1 year ago

      Quick point of clarification - concrete is about 40% sand. PortlandPortland cement is one of the other parts of concrete - it’s what actually holds concrete together. Other pozzolons, like fly ash, can make up 25-50% of the cementitious material.

      FWIW, Cement is wildly energy intensive to create and produces a huge amount of CO2. We don’t have a lot of replacement options for cement (or concrete generally) because of its unique durability.