We seal all our concrete to help maintain quality and prevent future damage. That said, your newly poured and sealed concrete slab will need periodic upkeep to extend its like. It will not need to be resealed for at least a year, and after that try to reseal it every other year, or every year for a high traffic area like driveways. You can help maintain it by cleaning up spills immediately and keeping it sealed to prevent severe weather and wear and tear from damaging it.