How Long Does Concrete Take to Cure? A Complete Timeline
Walk on at 24 hours, drive on at 7 days, full strength at 28 — exactly when each milestone happens.
Concrete keeps gaining strength for years, but the milestones that matter for normal use happen in the first 28 days.
Hour 0–6: initial set
Concrete becomes too stiff to finish. No foot traffic.
24 hours: light foot traffic
You can walk on it carefully. No tools, no heavy loads.
7 days: ~70% strength
Light vehicles OK. Most of the curing reaction is done. Continue keeping the surface damp through this point.
28 days: design strength
Full traffic, full loads. Sealing and staining can start.
Speeding it up
Type III high-early cement or accelerator admixtures get you to 70% in 3 days instead of 7. Useful for repair work that must reopen fast.
Plan your pour and reopening schedule with the calculator.
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