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Human urine could help make concrete on Moon, space agency says
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BERLIN – The European Space Agency said Friday that human urine could one day become a useful ingredient in making concrete to build on the moon.
The agency said researchers in a recent study it sponsored found that urea, the main organic compound in urine, would make the mixture for a “lunar concrete” more malleable before it hardens into its sturdy final form.
It noted that using only materials available on site for a moon base or other construction would reduce the need to launch supplies from Earth.
The main ingredient in “lunar concrete” would be a powdery soil found on the moon’s surface known as lunar regolith. ESA said urea, which can break hydrogen bonds and reduce the viscosity of fluid mixtures, would limit the amount of water
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