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

Le marc de café renforce le béton et réduit son impact environnemental

TECH XPLORE

Des chercheurs de RMIT ont créé un biochar à partir de marc de café usagé pour remplacer une partie du sable du béton. Le matériau gagne jusqu’à 30 % de résistance et réduit son empreinte carbone de 26 %. Des essais sur trottoirs sont en cours, transformant un déchet quotidien en infrastructure durable.

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