[DanEC]

Probably difficult to tell what condition the concrete surface is in under the failing epoxy paint but if you don't see cracks or other major defects, diamond polishing is also another floor finish possibility. You see this a lot in big box stores and grocery stores where the exposed concrete surface has been polished to a fine, somewhat glossy finish. It also hardens the surface so it's pretty durable unless prone to dropping transmissions or rear ends on it.