Which test is commonly performed to assess the durability of aggregates for high-traffic conditions?

The LA Abrasion test is a widely recognized method used to evaluate the durability of aggregates, particularly in high-traffic conditions. This test measures the resistance of aggregate materials to wear and degradation due to mechanical actions, such as those that occur in vehicle traffic. During the test, a sample of the aggregate is placed in a rotating drum along with steel balls. As the drum rotates, the aggregates are subjected to grinding, simulating the wear and tear they would experience in real-world conditions.

The results provide a percentage of mass loss, which indicates how well the aggregate can withstand the stresses it will encounter in high-traffic applications like roads and parking lots. Aggregates that have a low percentage of weight loss during the LA Abrasion test are considered more durable and suitable for high-traffic uses, as they are less likely to break down under pressure.

In contrast, the moisture meter test primarily focuses on determining the moisture content of aggregates, while the specific gravity test assesses density rather than durability. The plasticity index test evaluates the plasticity characteristics of fine aggregates, which is not directly related to their performance under high-traffic conditions. Therefore, the LA Abrasion test stands out as the most relevant and critical method for assessing aggregate durability in high-traffic scenarios