Resistance to degradation of small size coarse aggregate by abrasion and impact of the Los Angles Machine

Apart from testing aggregate with respect to its resistance to wear or degradation (hardness), it is an important test for aggregate to be used for roads, and in floor surfaces subjected to heavy traffic. This test method covers a procedure for testing coarse aggregates smaller than 1.5 in (37.5mm) in size to determine resistance to degradation using the Los Angeles testing machine. This test has been widely used as an indicator of the relative quality or competence of various source of aggregate having similar mineral composition.

The test method conforms to the ASTM standard requirements of specification C131.