Hardening up: the next generation of concrete.

Concrete is one of the most widely used construction materials on earth.  Easily cast into any shape, load-bearing, and quick to set, concrete is used in construction from holding a post into the ground to building superstructures like roads, bridges, and dams. But one element commonly used in concrete – Ordinary Portland Cement – is far from perfect, causing environmental and health concerns. A new version of concrete has recently been developed and it could shake up the construction industry in a historic way.