I assume I shouldn’t label this as OC.

    • Kbobabob@lemmy.world
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      1 day ago

      It can’t be used for concrete because it’s too smooth due to erosion. Industrial sand is manufactured to have sharp edges so it holds better.

      • lud@lemm.ee
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        14 hours ago

        I heard beach sand is pretty good for concrete. Apparently there is something called sand mafias in (iirc) India which basically steals sand from beaches and sells it.

        • And009@reddthat.com
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          7 hours ago

          Beaches, rivers you name it. Flowing water makes the best kind of construction sand.

          In bangladesh, the sand mafia have literally eaten through making rivers extra wide.