Swedneck comments on 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

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 (scienceblog.com)

submitted 2 months ago by inari@piefed.zip to c/environment@sh.itjust.works

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[–] Swedneck@discuss.tchncs.de 1 point 2 months ago

charcoal-like biochar? is.. is that not just the fucking definition of charcoal??