| Form | Cellulose fibre pellets with a protective coating |
|---|---|
| Used in | Stone mastic asphalt wearing courses |
| Dosage | 0.3% of the total mix |
| Dispersion | 5–15 seconds of dry pre-mixing |
| Handling | Low dust in transport, storage and at the plant |
| Data sheets | Technical and safety data sheets on request |
The fibre that keeps the binder in the mix.
HLB-FIBER is cellulose stabilising fibre for stone mastic asphalt, supplied as coated pellets. Dosed at 0.3% of the mix, it absorbs and holds the bitumen so nothing drains off in the truck or on the paver.
At a glance
Typical SMA mix
| Component | Share |
|---|---|
| Coarse aggregate | 70–80% |
| Filler | 8–12% |
| Binder | 6.0–7.0% |
| Stabilising fibre | 0.3% |
By mass of the total mix.
Absorb, hold, disperse.
SMA is mostly coarse aggregate, a stone skeleton that resists rutting, with a rich bitumen mastic filling the voids. Without a stabiliser the mastic drains during storage and transport, and the mix arrives lean on top and rich at the bottom. Cellulose fibre absorbs the bitumen into its structure and holds it there, which also gives a thicker binder film and better resistance to ageing.
HLB-FIBER is pelletised and coated, so it meters cleanly and keeps dust down in the plant. In the mixer the pellets break open and disperse within a 5–15 second dry pre-mix, with no clumping in the finished mix.
Without stabilising fibre
- Binder drains during transport and storage
- Mix arrives lean on top, rich at the bottom
- Inconsistent surface texture, early ravelling
With stabilising fibre at 0.3%
- Fibre absorbs and holds the binder in the mastic
- Mix stays homogeneous from plant to paver
- Full design binder content reaches the road
Where it’s used
SMA wearing courses, anywhere a durable, low-noise, rut-resistant surface is specified:
- Highways
- National and rural roads
- City streets
- Airports
- Industrial areas
Packaging and storage
Packaging to suit your plant. Ask when you request a sample.
| Packaging | Big bags, 1000 kg |
|---|---|
| Storage | Indoors, dry |
| Transport | In closed trucks or containers |
Video
Data sheets come with the sample.
Technical and safety data sheets for HLB-FIBER are sent on request, together with a sample for your own trial. Tell us the application and we’ll send the right grade.
Samples
Test it in your own mix.
A sample, its data sheets, and someone to call while you run it.