Alaska · answered by Verika · verified against sources
What are the curing requirements for concrete pavement in Alaska?
Cure concrete pavement in Alaska for at least 7 days (10 days if fly ash/slag >10% of cement), plus 1 extra day per day below 50°F. Strength must reach 70% (if post-cure temps ≥50°F) or 100% (if post-cure temps <50°F) of specified compressive strength. Protect from rain, cold (<40°F requires approved cold-weather plan), and mechanical damage until curing ends and strength ≥80% (for loads) or 100% (for traffic). Maintain concrete ≥50°F for first 6 days, then ≥32°F with extended curing if needed [1,4,8].
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