Researchers at RMIT University created biochar from used coffee grounds, replacing part of the sand in concrete. The result: up to 30% more strength and a carbon footprint cut by up to 26%. Real-world footpath trials are already underway — waste coffee becoming sustainable infrastructure.
(c) Devin Avery
(c) Devin Avery

Kaffeesatz macht Beton stärker, sauberer und deutlich klimafreundlicher

TECH XPLORE

Forschende der RMIT University verwandelten gebrauchten Kaffeesatz in Biochar, das einen Teil des Sands im Beton ersetzt. So gewinnt der Baustoff bis zu 30 % an Festigkeit und senkt seine CO₂-Bilanz um bis zu 26 %. Erste Gehwegtests laufen bereits und machen Alltagsabfall zu nachhaltiger Infrastruktur.

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