{
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  "@type": "Dataset",
  "name": "How long does concrete take to cure?",
  "description": "Concrete reaches about 70% of its design strength in 7 days and full design strength at 28 days. Walk on it after 24–48 hours, drive on a new driveway after 7 days, and wait the full 28 days before heavy loads, sealing, or staining.",
  "url": "https://www.revenuelab.fyi/answers/how-to-calculate-concrete-cure-time",
  "dateModified": "2026-10-01",
  "creator": {
    "@type": "Organization",
    "name": "RevenueLab",
    "url": "https://www.revenuelab.fyi"
  },
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "keywords": [
    "Concrete Cost Calculator",
    "Concrete Slab Cost Calculator",
    "Concrete Slab Material Calculator"
  ],
  "distribution": {
    "@type": "DataDownload",
    "contentUrl": "https://www.revenuelab.fyi/api/public/page.json?path=answers%2Fhow-to-calculate-concrete-cure-time",
    "encodingFormat": "application/json"
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  "json": {
    "type": "answer",
    "question": "How long does concrete take to cure?",
    "shortAnswer": "Concrete reaches about 70% of its design strength in 7 days and full design strength at 28 days. Walk on it after 24–48 hours, drive on a new driveway after 7 days, and wait the full 28 days before heavy loads, sealing, or staining.",
    "tableTitle": "Cure timeline for a typical 4,000-psi residential mix",
    "columns": [
      "Age",
      "Strength",
      "What's safe"
    ],
    "rows": [
      {
        "label": "24–48 hours",
        "value": "~15–25%",
        "note": "Foot traffic only; forms can come off edges"
      },
      {
        "label": "3 days",
        "value": "~40%",
        "note": "Light foot traffic, no loads"
      },
      {
        "label": "7 days",
        "value": "~70%",
        "note": "Passenger cars on driveways"
      },
      {
        "label": "28 days",
        "value": "100%",
        "note": "Full loads, sealing, staining, saw-cut decisions final"
      }
    ],
    "context": "Curing is a moisture process, not just a clock: the first 7 days need the surface kept wet (curing compound, wet burlap, or plastic) because a slab that dries out early can lose 20–30% of its final strength. Temperature moves everything — below 50°F curing roughly halves in speed, and a freeze in the first 24 hours can permanently damage the surface. Hot, windy days are the other enemy: they pull water out of the surface and cause plastic-shrinkage cracks within hours.",
    "methodology": "Strength-gain percentages follow the standard ASTM C39 curve for Type I/II Portland cement at 70°F with continuous moist curing. Cold-weather guidance per ACI 306 (protection required below 40°F).",
    "dateModified": "2026-10-01",
    "relatedCalculators": [
      {
        "label": "Concrete Cost Calculator",
        "to": "/concrete-cost-calculator"
      },
      {
        "label": "Concrete Slab Cost Calculator",
        "to": "/concrete-slab-cost-calculator"
      },
      {
        "label": "Concrete Slab Material Calculator",
        "to": "/concrete-slab-material-calculator"
      }
    ],
    "relatedReading": [
      {
        "label": "Concrete cost per yard",
        "to": "/answers/how-much-does-concrete-cost-per-yard"
      }
    ]
  }
}