newsweek.ro/tehnologie/zatul-de-cafea-schimba-modu

Researchers in Australia have found that coffee grounds can be used to enhance concrete strength by up to 30%. This innovative approach involves replacing a portion of sand in concrete with biochar derived from coffee waste. The technology has progressed beyond laboratory tests and has been applied in real infrastructure projects, including an experimental sidewalk in Gisborne and road upgrades in Pakenham. This method not only improves concrete durability but also helps reduce organic waste and the demand for sand, a critical resource in construction. The team is now assessing the long-term properties of this material for future applications.