John Provis is a Professor of Materials Science and Engineering and Head of the Engineering Graduate School at the University of Sheffield. Concrete to many people is a boring subject - but John is clearly passionate about the material, and determined to find ways to lower it's embodied emissions. In this episode we discuss:

• The chemistry of replacing portland cement with supplementary cementious materials (SCM)
• The most efficient ways to replace portland cement with SCM
• What is on the horizon for concrete developments

Enjoy!