What does the formula (0.003% X Total Dry Mass) calculate?

The formula (0.003% X Total Dry Mass) is used to calculate the maximum gain or loss of moisture in a specific aggregate sample. This is particularly relevant in the context of mixture aggregate testing, where understanding the moisture content is crucial for ensuring proper aggregate performance in asphalt or concrete.

The value 0.003% represents a small fraction that, when multiplied by the total dry mass of the aggregate, estimates the potential variations in weight due to moisture gain or loss. This is important because fluctuations in moisture can affect the final density and performance characteristics of the aggregate mix, impacting the durability and strength of the constructed pavement.

By determining the maximum potential change in weight, technicians can make informed decisions regarding adjustments required for achieving the desired aggregate properties and blend consistency. This understanding is vital for maintaining quality control during the mixture design process.