What type of testing is commonly performed on aggregate materials?

The type of testing commonly performed on aggregate materials includes sieve analysis and specific gravity tests, which are essential for understanding the physical characteristics of aggregates used in construction.

Sieve analysis helps determine the particle size distribution of an aggregate sample, which is crucial for ensuring that the mix design of concrete or asphalt meets specified requirements. It allows engineers to evaluate whether the aggregate can provide the desired strength, stability, and workability in the final product.

Specific gravity tests provide insights into the density of the aggregate material, which is important for calculating the voids in the aggregate, as well as for determining the water-cement ratio in concrete mix designs. This testing also assists in quality control, helping to ensure that the aggregates meet required specifications for construction projects.

Moisture and density tests, while important for various aspects of pavement and soil compaction evaluation, are not specific to the characteristics of aggregate itself. Compression and tensile tests focus on the performance characteristics of materials like concrete or steel, and electrical conductivity tests are typically not relevant to aggregate testing. Therefore, the sieve analysis and specific gravity tests are the most relevant and commonly performed on aggregate materials.