What are the curing requirements for concrete pavement in Texas?

"artificial heat is above 50°F for at least 19 hr. or the surface temperature of the concrete is maintained above 40°F for 24 hr. Curing begins when the concrete curing system has been applied." [3] "Obtain approval of the proposed curing methods, equipment, and materials at the pre-pour meeting before placing concrete. Inadequate curing or facilities may delay all concrete placements on the project until remedial action is taken. Apply final curing as soon as possible after interim curing wit hout damaging the surface finish. Check the adequacy of the curing each day of the curing period. Take corrective action or modify the curing methods as needed to maintain a moist concrete surface." [5] "A curing day is a calendar day when the temperature, taken in the shade away from artificial heat, is above 50°F for at least 19 hr. or, on colder days , if the temperature of all surfaces of the concrete is maintained above 40°F, for the entire 24 hr. The required curing period begins when all concrete has attained its initial set. Tex -440-A may be used to determine when the concrete has attained its initial set." [5] "Cure all superstructure concrete according to the following, unless otherwise shown on the plans:  Concrete using Type I or Type III cement: 8 days  Concrete using Type I/II or Type II cement: 10 days  Concrete with any type of supplementary cementing materials : 10 days" [5]

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