Think concrete just has to be a big ol' plain slab? Not anymore... at least not in Helsinki, where Graphic Concrete applies texture and imagery to what would ordinarily be a big grey slab. They have devised a new way to produce a patterned concrete surface. The patented Graphic Concrete technology involves applying a surface retarder to the surface of a special membrane and this method allows concrete product manufacturers to produce different types of high-quality patterned concrete elements and slabs.