Carbon fiber is one of those futuristic-sounding, expensive materials that I associate with supersonic airplanes, fancy road race bicycles, and $400,000 dining tables.  So imagine my surprise when I found out that, back in 2003, a group of precast concrete companies banded together with carbon fiber grid provider Chomarat to form AltusGroup, who manufacture a product called Carbon Cast Concrete.  “AltusGroup members use Chomarat’s C-GRID®, as the carbon fiber epoxy based reinforcing in several precast building system products to enhance the strength and reduce the weight of precast concrete” (Drabestott).  Reinforcing humble precast concrete with …