The cement industry is responsible for around 5% of all global emissions today. A number of innovators are working on ways to reduce -- and even reverse -- the climate impact of cement by turning cement into a net carbon sink. Below are three articles explaining some of the science behind these efforts for carbon negative cement. Happy Friday!
- An oldie but goodie from National Geographic on carbon-negative cement. The company in this story, Novacem, has since been acquired by a major cement producer -- their technology is still under development but has not yet been commercialized at a major scale.
- Video: PBS interviews David Stone at the University Arizona on cement hardened with CO2-trapping iron particles. "Stone — that’s his real name — began to think his discarded rock just might be a substitute for a very common product: cement."
- NJ-based Solidia technologies is pioneering a cement production process that uses waste CO2 emissions from industrial applications to make higher performing cement with a lower environmental impact. Using bioenergy or direct air capture to source their CO2 could result in cement that has a net-negative carbon footprint.