Determine the Suitability of Aggregates with Los Angeles Abrasion Testing Machine

The Los Angeles test determines the rate of degradation of the mineral aggregates of a standard grading as a result of the combination of actions including abrasion, grinding, and impact. It is conducted with a steel drum, which can be rotated and contains a specific amount of steel spheres. A Los Angeles abrasion testing machine is a conventional method for indicating abrasion characteristics and aggregate toughness. To produce high-quality Hot Mix Asphalt (HMA) it is crucial to identify aggregate abrasion characteristics by ensuring the constituent aggregate can resist disintegration, crushing, and degradation.


The performance of aggregates must be determined before they are used in road base applications and paving. The Los Angeles abrasion machine evaluates resistance to wearing and fragmentation caused by friction. A sample of the aggregate is placed in a drum and tumbled inside for a fixed amount of revolutions. High-quality testing machinery comes with a safety stop on the door opening to prevent the contents from spilling out, and a digital counter with auto-stop for a highly control testing procedure. Some providers of industrial testing equipment can provide a soundproofing cabinet with the Los Angeles abrasion testing machine.

A suitable aggregate for highway pavements must be hard and capable of resisting wear, which may be caused by the compaction equipment, internal abrasion effect, and traffic’s polishing effect. The road aggregate must be hard enough to resist abrasions, too. The Los Angeles abrasion testing machine produces the abrasive action on the aggregate using steel balls as they are rotated and tumbled in a drum. The resulting wear on the aggregate caused by the steel balls is identified as the abrasion value.

It is essential for a Los Angeles abrasion testing machine to be built according to industry standards. The same principle applies to the testing procedure, too. For instance, it is essential for the drum to be rotated in 500 revolutions in speeds of 30 to 33 rpm, and the material is separated into the material passing the 1.70mm sieve and the material retained on a 1.70mm sieve.
Location: Niddrie VIC 3042, Australia

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