What does the aggregate abrasion test measure?

The aggregate abrasion test is specifically designed to assess the ability of aggregate materials to withstand wear and degradation when subjected to mechanical forces. This test simulates conditions that aggregates might encounter in practical applications, such as road surfaces or concrete. By measuring the percentage of material that is worn away when subjected to a specified abrasive force, this test provides valuable insights into the durability and longevity of the aggregate.

Understanding why this measurement is important is crucial for construction and engineering projects, as aggregates with higher resistance to abrasion indicate they are more suitable for applications where they will experience heavy traffic or harsh wear conditions. This enhances the quality and sustainability of the structures they are used in. The other options, such as measuring moisture content, weight, or compressive strength, do not address the specific focus of the aggregate abrasion test, which centers on wear resistance.