How long does concrete take to dry?
Answer
24-48 hours to walk on, 7 days to drive on, 28 days for full strength
24-48 hours: safe for foot traffic and removing forms7 days: reaches about 70% strength — safe for vehicles on driveways28 days: full cure, reaches 100% design strength (typically 4,000 PSI)Keep concrete moist during the first 7 days for best results (mist with water)Hot weather speeds surface drying but can reduce final strengthCold weather (below 50°F) slows curing significantly — use blankets or additives
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How We Calculated This
Concrete reaches ~70% strength at 7 days and ~100% at 28 days
Standard 4,000 PSI mix: ~2,800 PSI at 7 days, ~4,000 PSI at 28 days
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Calculated using verified formulas. Last updated March 2026.