Coffee grounds were supposed to change the construction industry. Scientists show directions
We wrote a year ago that coffee grounds can be used to strengthen concrete. Scientists are still exploring this possibility and point to three main areas they need to address.
Scientists from RMIT University in Australia are constantly expanding their knowledge about the properties of coffee grounds they have discovered. They have been claiming for months that this organic product can support the construction industry and at the same time reduce the amount of waste.
Australia. Will coffee grounds strengthen concrete?
Every year, approximately 10 billion kilograms of ground coffee waste is produced in the world. Most of it ends up in landfills, contributing to gas emissions and deepening the greenhouse effect. At the same time, the construction industry is struggling with the growing demand for concrete, which also leaves a significant footprint on the environment.
From an article published in the Journal of Cleaner Production, we learned about attempts to solve both of the above issues in one fell swoop. A method for transforming coffee grounds into a powerful concrete additive has been developed at RMIT in Australia.
In the process of pyrolysis, i.e. heating coffee waste to over 350 degrees Celsius, oxygen is removed from the grounds. The carbon-rich material can then be incorporated into the cement mixture, strengthening it by up to 30 percent.
Coffee and stronger structures. What will scientists do now?
However, this promising discovery requires much further research. These are still at an early stage, so scientists have indicated three main directions in which they will follow in the coming years.
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determining the long-term strength of coffee-reinforced concrete
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durability tests, including frost cycles, water absorption and abrasion
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searching for other sources of organic waste for biochar production
Researchers expect that any confirmation of the potential of coffee waste could completely change the construction industry. Turning coffee grounds into stronger concrete isn’t just about clever recycling. For scientists, this will be proof that it is possible to create a more sustainable future in terms of raw materials.
