What is the typical method for determining the moisture content of aggregates?

The oven drying method is the standard technique used for determining the moisture content of aggregates. This procedure involves weighing a sample of aggregate before and after it has been dried in an oven at a specified temperature for a set period of time, typically 105°C. The difference in weight before and after drying reflects the amount of moisture that was present in the sample.

This method is preferred because it is a direct and reliable way to quantify moisture, which is critical for proper aggregate handling, mixing, and overall quality control in construction projects. In contrast, methods like calorimetric analysis or chemical analysis are not typically employed for moisture content determination in aggregates, as they may be more suited for other types of material assessments. Moisture meters, while convenient for field use, may not provide the same level of accuracy as the oven drying method, particularly under varying environmental conditions. Thus, the oven drying method remains the industry standard for accurately assessing the moisture content of aggregates.