What are the requirements for proper curing of concrete?
A. Curing must be accomplished by protecting the concrete from drying during the curing period by leaving forms in place, spraying or sprinkling the concrete with water, covering with wet burlap or plastic sheeting, or by use of a curing compound. The protection must be applied immediately after the initial set of the concrete. A minimum curing period of 3 days is required when atmospheric temperatures are at or above 55 F or 7 days when the atmospheric temperature is below 55 F. Concrete must be kept from freezing during the curing period.
