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.
Also, the concrete will need to be reinforced so that it has a minimum strength of 2500 psi at 28 days. Yes, this is the standard curing time for a foundation or slab. Some acceleration agents can be added to speed things up, however. Extra reinforcement should be in the form of re-bar with wire or fiber mesh.