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Could a mix of sand and urine be a super-green replacement for concrete?

Andrea Margutti

For his thesis project, Dupe, the graduate of the University of Edinburgh, Peter Trimble investigated if it was possible to grow our building material instead of using intensive heat. “I thought, Is there an equivalent material that’s more environmentally friendly but structurally comparable out there?” he recalls. Turns out there is. All you need is some sand, bacteria, calcium chloride and a decent amount of urea to make it happen.

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