The taxi-way system includes the following: 1  A parallel taxi-way 30 metres wide designated P. 2  Link taxiways 30 metres wide marked Q , W , Y & Z. 3  Holding bays at every intersection to the runway.  Loop taxi-ways at both ends of the runways.
Although concrete gains strength more slowly at lower temperatures, the strength of concrete cured at will eventually reach that of concrete cured at 70Â°F. Even if the concrete temperature drops to the mid teens, the hydration process will continue a very slow rate.
It depends on the mix you use and if anything has been added to it to make it set faster or slower. If you are using a premixed concrete it will be pretty stiff in about 2 hours. You could probably walk on it in about 6. Concrete can take several days to cure. Curing is different than setting, setting means just getting stiff and curing means the full load bearing capacity.How quickly it cures depends on the weather. Usually the longer it takes to cure the stronger it will be.