▲ 139 ▼ China Now Uses 80% Artificial Sand. Here's Why That's A Bigger Deal Than It Sounds (www.zmescience.com) submitted 22 hours ago by inari@piefed.zip to c/world@lemmy.world 28 comments fedilink hide all child comments
[–] MonkderVierte@lemmy.zip [S] 2 points 9 hours ago (1 child) Would crushed beton also work? I mean, if the piece size and form is right. permalink fedilink source hideshow 2 child comments replies: [–] impairedimperator@lemmy.zip [S] 3 points 5 hours ago* Normally crushed materials don't work well because the shape of the particles. Sand is smoothed by years of waves, crushed rock is jagged. This leads to issues with viscosity. A direct example: railroad rocks. Rail tracks are laid on very well engineered rocks, that are designed to lock together under the weight of a train. They have a roughly 1x1x2 cross sectional ratio, specifically for that purpose. You don't want that happening when you pour concrete. permalink fedilink source parent
[–] impairedimperator@lemmy.zip [S] 3 points 5 hours ago* Normally crushed materials don't work well because the shape of the particles. Sand is smoothed by years of waves, crushed rock is jagged. This leads to issues with viscosity. A direct example: railroad rocks. Rail tracks are laid on very well engineered rocks, that are designed to lock together under the weight of a train. They have a roughly 1x1x2 cross sectional ratio, specifically for that purpose. You don't want that happening when you pour concrete. permalink fedilink source parent