Just add astronaut tears.
, a team at the University of Manchester capitalized on the fact that potato starches are a likely feature of any upcoming Mars excursions’ menus. According to the team’s estimates, a roughly 25 kg sack of dehydrated potatoes include enough starch for half a metric ton of their StarCrete—enough to compile around 213 bricks for structures.
In their own laboratory tests using simulated Martian regolith—aka dirt—scientists measured a compressive strength of 72 Megapascals , or roughly twice that of regular concrete’s 32 MPa rating. As an added bonus, creating a similar mixture using mock moon dust showed a compressive strength of over 91 MPa, meaning the StarCrete variant is also a possibility for humans’
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