The Los Angeles Abrasion test, is widely used as an indicator of aggregate quality. The test measures the degradation of standard gradings of aggregates subjected to abrasion and impact in a rotating steel drum containing an abrasive charge of steel balls. Up to twelve balls are used, depending on the gradation of test samples.
Los Angeles Abrasion Machine design has integrated safety features with user controls on the outside of the built-in sound enclosure. An electrical interlock allows the machine to operate only when the double-hinged lid is closed and a safety key is inserted. No moving parts are exposed during operation. A wear resistant shelf of hardened steel is optionally available.
Electronically controlled gear-motor rotates the drum at 30—33rpm via an enclosed chain drive. Drum assembly rotates in flanged ball bearings with dust seals and grease fittings. The controller console with overload protection has a counter and On/Off push-button controls, and automatic counter stops rotation after a preset number of revolutions. Abrasive charge of twelve hardened steel balls 46-48mm in diameter and 390-445 grams are included.
Standards: EN 1097-2, ASTM C131, UNI 8520-19, EN 12697-17, EN 12697-43, NF P18-573, AASHTO T96, CNR N° 34
Used to determine the resistance of aggregates to abrasion.
It comprises a heavy steel cylinder of 711 mm inside diameter x 508 mm inside length, mounted on a base frame.
The cylinder rotates at a speed of between 31 and 33 rpm.
The machine is fitted with an automatic digital counter which can be preset to the required number of revolutions of the drum.
The cylinder is counterbalanced so that the filling opening stays in position without tilting; a push-button allows to position such opening for the loading/ unloading operations.
The control panel can be wall fixed or placed on a bench.
It cannot be sold on the CE markets without its protections.
Power supply: 230V 50Hz 1ph 750W
Dimensions: 1000x800x1000 mm
Weight: 370 kg approx.