Description

The instrument measures a volume loss in a specimen under abrasion test and it’s used in tests such as:

• paving stones
• concrete slabs
• slabs made of natural rocks
• natural stone slabs
• terrazzo tiles

The test is performed by positioning a specimen to be verified in an abrasion tester Böhme apparatus on the test track on which has been spread normalized abrasive; the grinding wheel is made to rotate and the specimen is submitted to the abrasive load of 294 N for a certain number of cycles.
Before doing a test, establish the specimen’s bulk density by measuring weight and thickness.

Perform the test for 16 cycles composed of 22 turns each, calculating at the end a worn as an average loss in volume and weight.
The apparatus is basically composed of:

• Cast iron horizontal disc with a speed of 30 rpm and a diameter of 750 mm furnished with a 200 mm wide test track to position a specimen.
• Separate control panel with digital revolutions counter with automatic stop after preset revolutions.
• Specimen’s holder.
• Adjustable charger used to produce a force of 294 N ± 3 N on a specimen.

Specifications

Power supply: 230V 50Hz 1PH 800W
Dimension: 1500x1000x850 mm
Weight: 320 kg approx.

• EN1339
• EN 1340
• EN 13892-3
• EN 14157
• DIN 52108
• EN 13748-2
• EN 1338