June 23, 2024


Concrete is strong and durable – that’s why it’s the basis for so much of our infrastructure. It’s also terrible for the planet, because of one key ingredient: cement, which is responsible for nearly 90% of concrete emissions. Researchers have now found a way to recycle old cement while also reducing the environmental impact of recycling steel. Madeleine Finlay talks to Julian Allwood, Professor of Engineering and the Environment at the University of Cambridge, to find out how the process works, and what it could mean for the emissions generated by the construction industry.

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