Engineers have come up with a way to make stronger concrete and cut down on the amount of spent coffee grounds wasted each yar.
. With up to 10 billion kilograms of spent coffee grounds estimated to be generated annually, most of that bulk finds its way to landfills, where it breaks down and releases methane and carbon dioxide into the atmosphere.“The inspiration for our work was to find an innovative way of using the large amounts of coffee waste in construction projects rather than going to landfills – to give coffee a ‘double shot’ at life,” Roychand explained in a press release from RMIT University.
So, how exactly does this work? According to the engineers, the spent coffee grounds are mixed into what the researchers call biochar, and then that can be used for concrete applications. Because the grounds are mixed directly into the concrete, it allows for a stronger bond, making it much stronger than regular concrete.
To properly scale it upward, the researchers will need to develop more practical implication strategies. It will also require more trials to ensure the stronger concrete can stand up to the test of time. Since organic materials like coffee grounds naturally break down, they’ll need to ensure the concrete’s strength doesn’t falter as time passes., which is capable of storing power captured by solar panels.
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