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. Concrete floors in general don't get especially hot. In fact, as we will see later in this article, concrete is known for staying cool. One exception, however, is during the curing process. Concrete begins as a powder, consisting of cement, sand, gravel and other materials.