Heavier types of asphalt cutback and tar maybe used inthat in-place aggregate may be used in an intermediatethe travel plant method, which reduces the time requiredmix and placed with a finisher without the necessity offor curing.The asphalt finisher may be usedloading and transporting aggregate. The finisher mustconcurrently with the travel plant. The hopper of thebe used with the travel plant for construction of somefinisher is kept directly under the travel plant outputairfields when surface tolerances are critical.chute. This arrangement reduces the maximum outputBlade Mixingof the plant, although it does provide uniform thicknessof the mat being laid.In blade mixing, the aggregate is dried and bladedWindrows must contain no more material than theinto windrows (fig. 16-8). The windrows are thenfinisher can place. The major advantage of this setup isflattened and the bitumen of the specific temperature isFigure 16-8.-Blade-mix construction.16-15
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