Which method is commonly used for assessing the density of aggregates?

The commonly used method for assessing the density of aggregates is the specific gravity method. This method involves measuring the density of the aggregate material relative to the density of water. Specific gravity is a crucial parameter since it provides insight into the material's compaction characteristics and stability when used in construction. It influences the overall performance of the aggregates in concrete and base layers.

By using the specific gravity method, technicians can determine the amount of void space in the aggregate, which directly impacts the density and, consequently, the strength and performance of the concrete or other construction materials where the aggregates are utilized. This method is frequently applied in quality control processes and for various applications, including mix design, ensuring that the aggregates meet the necessary specifications.

In contrast, the water displacement method, while useful for specific volume measurements, is not primarily used for assessing density in a construction context. The soil compaction method focuses on the density of compacted soils rather than aggregates themselves, and the sand equivalent test is designed to assess the cleanliness of fine aggregates rather than their density.