As unsexy as it sounds, a new set of equations may be the secret to 3-D printing for construction.
The problem: Firms like 3D Printhuset have tried printing buildings out of concrete on-site, but it can take a long time and the machines have a habit of breaking down.
All about timing: Specifically, the timing for drying concrete. If the lower layers don’t dry fully before the next are added, they buckle under the weight. You don’t want wonky walls.
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