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.
