"Too much concrete is being used".

you really think a little more concrete is a problem? its the most abundant construction material in the world.

Me personally? I don't have an opinion, but I guess concrete production represents 4-8% of global co2 emissions. Not sure where "little" is coming from. Concrete is ubiquitous. If a more resource-efficient process is available, it might be often applicable.

https://www.theguardian.com/cities/2019/feb/25/concrete-the-...