I went to a presentation tonight on the concrete ambassador series of four talks throughout the UK, Professor Karen Scrivener gave the talk on “cementing the future of concrete – science & sustainability” She ably demonstrated that concrete was needed and demanded as a unique material worldwide and went on to get us to the nana technology that enables them, the scientists, to tell us, the users and practitioners how a better understanding of the material and its constituents can deliver concrete with less CO2 emissions. It is the constituents that hold the key to CO2 reduction along with techniques …