North Carolina · answered by Verika · verified against sources
What are the curing requirements for concrete pavement in North Carolina?
Cure concrete pavement immediately after finishing, using membrane curing compound (min 0.0067 gal/sf mechanically applied, 0.01 gal/sf hand-applied) or polyethylene film (black/dark for 40–60°F, white opaque for >60°F, ASTM C171). Curing continues until compressive strength exceeds 3,000 psi (maturity method). Protect from rain; reapply compound within 3 hours after heavy rainfall. Do not expose concrete >30 mins before curing.
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