This device is used to measure the ability of coarse aggregate (sand) to resist friction and impact under standard conditions, expressed as wear loss (%).

The Los Angeles abrasion loss method is an important indicator of the performance of stone materials, especially closely related to the anti rutting ability, compressive strength, wear resistance, and durability of concrete, asphalt mixtures, and base stone materials.

Generally, aggregates with low wear loss are hard and have good wear resistance and durability. However, stone materials with high content of weak particles and severe weathering undergo severe abrasion testing and crushing. The Los Angeles abrasion tester is an important means of testing stone materials.