How Long Does Concrete Take to Cure?
Updated
Concrete is walkable in 24–48 hours, ready for vehicles in about 7 days, and fully cured at roughly 28 days when it reaches ~90%+ of its strength. Curing continues slowly for months, but 28 days is the standard benchmark for full design strength.
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Curing timeline
- 24–48 hours: safe to walk on
- 7 days: ~70% strength, light vehicles OK
- 28 days: full design strength
Keep it moist
Concrete cures through hydration, not drying. Keeping it damp for the first 7 days — with curing compound, plastic sheeting, or misting — produces a stronger, crack-resistant slab.