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.
Effect of temperature conditions on the strengthdevelopment of concrete. Concrete for the lower curve wascast at 4Â°C (40Â°F) and placed immediately in a curing roomat -4Â°C (25Â°F). Both concretes received 100% relative-humidity curing for first 28 days followed by 50% relative-humidity curing (Klieger 1958).oncrete should not be placed onany surface that would lower the temperature of the as-placed concrete below the minimum values shown on Line4 in Table 14-1. ENCLOSURES Heated enclosures are very effective for protectingconcrete in cold weather, but are probably the most expen-sive too (Fig. 14-17).