Our Canoe just finished the 28-day curing process. Once the canoe was completed, the curing process started that night.  In order to cure the concrete, burlap sacks were soaked and wrapped around the canoe. A piece of plastic was placed over the burlap sacks to keep the moisture in. In order to ensure the canoe maintained moisture, the burlap sacks were soaked every day.  Curing is an important process because it increases the strength and durability of the concrete.