Mixing a coffee biochar into concrete can strengthen the building material by as much as 30 percent while possibly minimizing emissions.
on August 22, Kilmartin-Lynch explained although coffee biochar is structurally finer than sand, its porous qualities allows the cement to actually better bind to the organic material. While in its early testing stages, the coffee-concrete is showing immense engineering promise.
Replacing at least some of traditional concrete’s sand also offers a major additional bonus to the team’s innovation. According to the university, 50 billion metric tons of natural sand is annually used in construction projects across the globe—resulting in a huge stress on ecosystems such as riverbeds and banks. Minimizing sand mining in favor of recycled coffee grounds therefore offers an additional, positive environmental effect.
If further research and finetuning goes according to plan, essentially all spent coffee ground waste could be put towards new concrete projects.The research team now intends to explore practical implementation standards, as well as field trials in collaboration with outside industry leaders. Perhaps joining forces with both the
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