Sand and Grit

Gravel and pre-crushed rocks become sand and grit

Efficient comminution for small grain sizes

LOW PROPORTION OF FINES AND A LOT OF COARSE GRAIN

The shortage of sand generates a bottleneck in supply in the construction industry. Sand is often extracted from natural resources. Gravel that occurs in larger grades is then broken down to usable grain sizes.

Therefore, the aim is to produce grains from gravel or broken rock from quarries that are similar or equal to the properties of sand.

OVERVIEW OF THE CRITERIA IN DECREASING PRIORITY

The grain surface should be as rough as possible, so that a viable matrix can be formed by the grains.
Within the overall grain distribution, the coarse grain fraction should be larger. This increases the load-bearing capacity of the concretes and reduces the need for glue or cement.
Ideally, the proportion of the grain range 0 – 0.25 mm should be as small as possible.

GRAIN SIZE 5,6 -8,0 MM

GRAIN SIZE 4,0 -5,6 MM

GRAIN SIZE 2,0 -4,0 MM