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How long does it take for concrete to harden?

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Concrete usually takes about five days to cure, or reach acceptable hardness, but a technique called steam saturation can shorten that curing time to less than 18 hours. A wide variety of additives allow the concrete to harden faster or slower, resist scaling, or adopt the final shape more easily.

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Get more facts and information about concrete . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

Similar questions: What is the fastest that concrete can cure? How many days or hours until concrete is hard? What length of time do you need to allow for concrete to become hard? How long does it take for concrete to cure? [ Hide these questions ]

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