More Details About Project GFRCnext has many positive attributes including the ability to have very clean and sharp edges and a smooth exterior surface, that lends itself well to columns. Unlike some concrete products, we can produce a smooth surface that appears to be a painted wood product but it has the solid, cold feel of stone. This college application allowed us to demonstrate these qualities dramatically with this line of columns. The result is a very impressive building with the stone look colonnade in front.