date:May 10, 2016
Researchers from Swinburne University of Technology in Melbourne have found a second-life for the vast amount of coffee grinds thrown away by Australian cafes every day.
Professor Arul Arulrajah, working with PhD candidate Teck-Ang Kua, discovered after a roasting process, the grinds can be mixed with slag (a waste product from steel manufacturing) and an alkaline solution to create cylindrical blocks. The blocks are strong enough to be used as a subgrade material under road surfaces.
The cyli