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Wind, humidity, and sunlight are all factors in how long it takes for concrete to cure, walking, normally about 1 to 2 days. 5. How long does it take for concrete to cure enough to drive on? Again, wind, humidity, and sunlight are all factors but the standard is about 5 to 7 days.ind, humidity, and sunlight are all factors in how long it takes for concrete to cure, walking, normally about 1 to 2 days. 5. How long does it take for concrete to cure enough to drive on? Again, wind, humidity, and sunlight are all factors but the standard is about 5 to 7 days.
For molds under 2 in thickness, use aggregate that is no more that 1/4 in size. Concrete can take anywhere from 15 min to 24 hrs to set; it all depends on what concrete mix is used, weather conditions, the size of the mold, and the amount of water used.