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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.
Once laid, the patio should be left for around 24 hours to allow the bedding mortar to harden and should not be walked on. STEP 5: Jointing the paving. Use a mortar mix of 3 parts soft building sand to 1 part cement and mix it slowly adding a little water at a time to get a smooth, damp consistency-not wet or sloppy.se a mortar mix of 6 parts sharp sand to 1 part cement. Mix together with just enough water to make it damp and workable, but not overly wet and runny. STEP 4: Laying the paving. First set up 2 taut string lines to guide both the line and the level of the paving.