Used coffee grounds were charred at 350 degrees Celsius until they became a charcoal-like biochar. That material replaced 15 percent of the sand by volume in a concrete mix, and the resulting concrete had 29.3 percent greater compressive strength than the control mix.
scienceblog.com
Researchers discovered that waste from your morning brew could revolutionize construction materials, making concrete dramatically stronger while solving a global disposal crisis.
  • Aeao@lemmy.world
    0·
    7 hours ago

    Yeah im part of the sand problem. Lol

    I’m going to trust the bbc on this one sluggo.