The discovery discussed in the snippet is perceived as obvious in hindsight, yet groundbreaking. The method has potential to contribute significantly to global climate mitigation and innovation in the UK. If adopted worldwide for steel recycling and cement production, it could reduce a quarter of current cement production, aligning with the urgency to address climate change.
Concrete is strong and durable – which is why it’s the basis for so much of our infrastructure. It’s also terrible for the planet, due to one key ingredient: cement, which is responsible for almost 90% of concrete emissions. Researchers have now found a way to recover old cement while also reducing the environmental impact of recycling steel. Madeleine Finlay speaks 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. Help support our independent journalism at
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