What does the term "moisture content" refer to in aggregates?

The term "moisture content" refers specifically to the amount of water contained in the aggregate, expressed as a percentage of the dry weight. This measurement is crucial for various reasons in construction and paving applications. Knowing the moisture content helps in determining how much water needs to be added or adjusted in the mixture to achieve the desired consistency and workability of the concrete or asphalt. It also directly affects the overall quality, durability, and performance of the final product. Proper management of moisture content ensures that the aggregates perform optimally and helps prevent issues like segregation, shrinkage, or failure in the cured material.

Understanding moisture content is fundamental for technicians to ensure accurate batch proportions and maintain the integrity of the mix, leading to better outcomes in the finished infrastructure. In contrast, the other options focus on aspects unrelated to the moisture content, such as weight, material ratios, or temperature, which do not define what moisture content specifically is.