Steel and cement are two materials that no society can do without. Their production comes with a significant carbon footprint, however. To meet zero-emission targets under the Paris Agreement, countries, cities, and industries are depending on new large-scale infrastructure for CO2 transport and sto...
The problem with concrete has long been that you can make carbon-removing-concrete, but architects won't specify it and contractors won't use it. Making it happen at scale isn't just a technical problem around material manufacturing, but a social one around getting people to trust the new material and use it.
We've had people creating carbon-absorbing cement versions for at least 15 years at this point. There are even ones where the end product is chemically identical to Portland Cement.
It's purely a social (and depending on the choice, cost) problem at this point.