You will probably find out it will be cheaper to remove and replace. IMO you should never apply chemicals to de ice concrete. It’s not the chemical that causes flaking its the freeze thaw cycles increasing that cause the damage. I always tell people keep some sand around if you have a slippery spot. If you pour new concrete increase the portland cement to at least a 7bag mix which will increase the surface strength.
Salt is the devil. I cringe driving watching it fly off vehicles, equipment, and so on for 5 months out of the year thinking of the damage it does to vehicles, soil/lawns, watersheds, and infrastructure. I don’t really understand why it is so widely used in MN at such a high cost and with the damage it does. I’d be the first to support legislation getting that crap off our roadways.
Ash is the best thing I’ve found to use for some traction in and around the house. It’s free. It’s dark colored and absorbs sunlight to help melt, and it’s generally good for soils or yards it ends up in.