Curing is the maintaining of a satisfactory moisture content and temperature in concrete during its early stages so that desired strength and durability may develop.  It is important to start curing slabs on grade immediately after finishing because the large area of slab surface can lose moisture or change temperature very rapidly.

Sealing is done after the concrete is cured out and dry and will allow the sealer to penetrate the concrete and seal it from within, (about 30 days of air drying after the concrete is placed and finished).  Resealing your concrete before winter will help protect it from deicers that drip off your car.