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Engineers Just Made Concrete 30% Stronger. The Secret Ingredient? Coffee.
(www.popularmechanics.com)
this post was submitted on 25 Aug 2023
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I know sand is actually a precious resource when you really learn about how much concrete we make and what kinds of sand there are and which are needed for concrete.
But still, it’s strange to think that this exotic bean which will only grow in certain climates can actually be easier to get than fucking sand.
That's just because right now used coffee is trash and sand isn't. If you remember back when bio diesel started getting popular, all of a sudden people were stealing fryer oil from restaurants. If you see a smelly looking black dumpster behind a restaurant, that is the used fry oil.
There's different kinds of sand and concrete needs specific types to work well.