UM: Concrete

A CBS News report on the condition of America’s infrastructure includes an interview with Victor Li, a UM professor who’s developing a kind of flexible concrete: “Li’s concrete is not only flexible, but it also heals itself. Any cracks that form will expose millions of tiny microfibers that form a seal when exposed to air and water. The cracks fill themselves in before they compromise safety. Dr. Li said that a bridge made of self-healing concrete would have an average life-span of 100 years. The problem is self healing concrete will probably cost 3 times as much as the regular stuff.” [Source]