How is it determined that aggregate is dry?

The determination of whether aggregate is dry is important in ensuring the quality of asphalt mixtures. Weighing the material every 15 minutes provides a suitable balance of time to obtain accurate moisture content readings without risking significant evaporation or moisture absorption that could affect the results.

Frequent checks, such as every 10 minutes, might be excessive and lead to inefficiencies, while longer intervals like every 20 or 30 minutes could result in missing the optimal moment when the aggregate's moisture content changes. Therefore, weighing every 15 minutes allows for an effective monitoring process, ensuring that the aggregate has been appropriately dried for optimal performance in asphalt applications.