Bitumen Emulsion is a mixture of Bitumen and water and emulsifier (a surface active agent). Since bitumen cannot be mixed with water, it needs to add an emulsifier with water before adding bitumen. Emulsifier comforts breaking of bitumen into minute particles and keeps it dispersed in suspension.
To produce the bitumen emulsion, water is mixed with a proper emulsifying agent. Then add bitumen with the water-emulsifier mix. The amount of bitumen to be added with water can be from 40% to 70% depends on bitumen emulsion uses.
Bitumen Emulsions classification:
- Cationic emulsion bitumen
- Anionic emulsion bitumen
- Non-ionic emulsion bitumen
| Bitumen Emulsion Grade | CRS-1 | CRS-2 | CMS-2 | CSS-1 | Test Method |
|---|---|---|---|---|---|
| MIN-MAX | MIN-MAX | MIN-MAX | MIN-MAX | ||
| Viscosity, Say bolt Furol at 50°C, SFS | 20-100 | 100-400 | 50-450 | 20-100 | ASTM D244 |
| Storage stability, 24-h (%) | xx-01 | xx-01 | xx-01 | xx-01 | ASTM D6930 |
| Demulsibility, 35mL, 0.8% dioctyl sodium sulfosuccinate (%) | 40-xx | 40-xx | xx-xx | xx-xx | ASTM D6936 |
| Coating ability and water resistance | |||||
| Particle charge test | Positive | Positive | Positive | Positive | ASTM D244 |
| Sieve test (%) | xx-0.1 | xx-0.1 | xx-0.1 | xx-0.1 | ASTM D6933 |
| Distillation | |||||
| Oil distillate, by volume of emulsion (%) | xx-0.3 | xx-0.3 | xx-12 | xx-xx | ASTM D6997 |
| Residue (%) | 60-xx | 65-xx | 65-xx | 57-xx | ASTM D244 |
| Tests on residue from distillation | |||||
| Penetration at 25 °C | 100-250 | 100-250 | 100-250 | 100-250 | ASTM D5 |
| Ductility at 25°C | 40-xx | 40-xx | 40-xx | 40-xx | ASTM D113 |
| Solubility in trichloroethylene (%) | 97.5-xx | 97.5-xx | 97.5-xx | 97.5-xx | ASTM D2042 |