What weight measurement method helps establish the dry weight of a core sample?

The method of placing a core sample in water for a specified duration is instrumental in establishing the dry weight of the sample. This technique helps determine the water absorption of the core, giving insight into the moisture content of the asphalt mixture. By knowing the weight of the sample before and after immersion in water, one can accurately calculate the weight of the material when it is completely dry.

This process is essential for understanding the physical properties of asphalt layers, including how moist conditions might affect stability and strength. Establishing a reliable dry weight is critical for quality control in asphalt paving, ensuring that the material meets specified standards.

Other methods, such as placing the sample in heavy oil or using a fan, might influence the drying process but do not provide a clear and reliable means of measuring the water content or establishing dry weight. Storing in a humidity chamber primarily controls environmental conditions but does not directly contribute to determining the dry weight as effectively as the water immersion method does.