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
Find more on concrete here in a special series from the Guardian
About Author
More Stories
Bizarre Australian mole even more unusual than first thought, new research reveals
Male mosquitoes to be genetically engineered to poison females with semen in Australian research
Memo to Trump: US telecoms is vulnerable to hackers. Please hang up and try again | John Naughton