What percentage of the time should the augers be moving while the paver is in operation?

The correct percentage of time the augers should be moving while the paver is in operation is indeed 80 - 90%. This range ensures that the augers effectively distribute the asphalt mix uniformly across the paver's width, which is essential for achieving a smooth and consistent surface. When operating within this percentage, the auger movement aids in maintaining the material flow, preventing segregation and ensuring that the correct amount of asphalt is being fed to the screed.

Operating the augers in this range also allows for adjustments to be made in response to changes in the paving operation, such as variations in speed or changes in mix delivery. Keeping the augers consistently active at this level promotes a well-coordinated material flow, which consequently leads to improved asphalt density and overall pavement performance.

Other percentages, while they may be functional, do not provide the same level of effectiveness. For instance, a lower percentage may lead to insufficient mixing or uneven distribution, which can compromise the quality of the pavement.