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.
Curing can help concrete be more resistant to damage from freezing and thawing. As long as hydration continues, the cement paste hardens and becomes more dense. If concrete is cured properly, it will be less porous than uncured concrete -- making it more difficult for water and salts to penetrate.