Aggregates and grits sienites 
Aggregates and grits sienites produced in Mine Nepheline Przedborowa an excellent material for all layers of the road for road KR1 to KR6, as well as structural concrete and asphalt.
Advantages:
- Grits sienites characterized by high hardness and resistance to polishing PSV-53 , which has a big impact on driving safety and shorter braking distance;
- Aggregates and grits sienites are completely hardy and have very low water absorption ;
- Products meet the requirements of the road for Class I grade 1;
- Grits sienites have very good adhesion to bitumitów ;
- Depending on grain grits sienites have a brand name 30 or 50 .
Application:
Aggregates and grits made with syenite are many uses, among other things, to:
- concrete construction
- asphalt
- SMA
- substructures auxiliary and essential
- embankments.
Assortment:
| Fraction: | Grain: |
|---|---|
| grits of syenite | 0 – 4 mm |
| grits of syenite | 4 – 8 mm |
| grits of syenite | 8 – 12 mm |
| grits of syenite | 12 – 16 mm |
| mix of sienites | 0 - 12,5 mm |
| mix of sienites | 0 - 31,5 mm |
| mix of sienites | 0 - 63 mm |
| Rubble of sienites | 20 - 63 mm |
Physical parameters of nepheline Przedborowa:
| Density | 2,83 ÷ 2,95 g/cm3 |
|---|---|
| Compressive strength | do 250 MPa |
| PSV | 53 |
| brasion on the dial Boehme | 0,15 ÷ 0,18 cm |
| LA Abrasion drum | 10 ÷ 18 % |
| Water absorption | 0,23 ÷ 0,30 % |
| Frost resistance (25 cycle) | total |
| Resistance to thermal shock | total |