This device is suitable for the ability of aggregates such as pebbles, gravel, and crushed stones to resist the combined effects of friction, impact, and edge shear, and is one of the indicators for identifying the quality of aggregates.

The machine consists of two metal cylinders with an inner diameter of 200mm and a depth of 340mm, covered and fixed at a 30 ° angle on a horizontal axis;
Select two samples, each weighing approximately 4kg;
Particle size: 2-5mm (weight 334g); 5-25mm (weighing 1000g); 25-35mm (weighing 1333g); 30-50mm (weighing 1333); Total 4000g