Scientists use seaweed to create stronger 3D-printed building material

3D-printed earth-fiber objects. PIC COURTESY/Dan Weill

Scientists have created a high-tech, 3D-printable building material using sodium alginate, the seaweed-derived biopolymer that makes ice-cream creamy and gives ‘popping boba' its snap.

Adding a tiny amount of this to local clay and sand makes the mixture incredibly smooth for 3D printing, and the final structure remarkably strong.

The mixture can withstand 25 per cent more pressure that standard earthen materials, and 33 per cent faster 3D printing.

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