Why is the Los Angeles Abrasion test performed?

The Los Angeles Abrasion test is specifically designed to evaluate the resistance of aggregate to degradation and wear. This test involves subjecting aggregates to a series of impacts and abrasions within a rotating cylinder, effectively simulating the wear and tear that occurs during handling and placement in construction environments. The results provide valuable data on the aggregate's durability, which is crucial for ensuring the longevity and performance of concrete and asphalt mixtures.

Understanding the resistance to degradation is particularly important for applications where aggregates are exposed to heavy traffic or harsh environmental conditions. Aggregates that do not withstand these stresses can lead to premature failure of the pavement or concrete, which is why this test is a critical part of material quality assessment in construction projects.