CCC Polished Concrete is one of the most durable and low maintenance floor finishes one could choose. Other than mopping the floor little maintenance is required. In very high traffic areas the floor may require a light burnish every few years. This is a process which just freshens up the finish.
On the other hand a floor that has been finished using a Grind and Seal application will need to be resealed (re-painted) in high traffic areas every few years as you would expect of a timber floor.