Scientists mixed waste coffee grounds with oyster shells to create a stronger construction material from two food wastes |
Waste coffee grounds and discarded oyster shells could be turned into a useful construction material. The mixture used spent coffee grounds (SCG) as its main filler, with oyster shells added to strengthen the granular structure and GGBS-based alkali-activated materials used as the binder. Because SCG particles are highly compressible, the researchers added oyster shells in…