My understanding is that crushed rock is inferior, as it binds too much water th... | Hacker News

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		krkoch on Aug 23, 2023 \| parent \| context \| favorite \| on: Coffee grounds make concrete 30% stronger My understanding is that crushed rock is inferior, as it binds too much water that weakens the concrete.

pfdietz on Aug 23, 2023 [–]

I'm pretty sure this is going to depend on what kind of rock it is, and how it was crushed and screened.

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