Bitumen emulsion
Bitumen emulsion is a Binding material, consisting of Water and Bitumen. Emulsion is a disperse system, with particles of bitumen dispersed in water. The main task is to keep bitumen micro particles from coalescing, which maintains physicochemical properties of the emulsion and its quality. This stability is achieved with special emulsifiers. Bitumen Emulsions are transportable, easily stored materials. They are kept in the storage warehouses in cylindrical containers at plus temperatures for up to several months, without losing their properties.
All stabilizers/emulsifiers are supplied at exact doses, since they strongly affect characteristics of the finished product. Latex polymers are ideal modifiers and are added to bitumen emulsion to improve properties. Solvents increase the Viscosity and Emulsifying properties.
Bitumen emulsion Classifications
Emulsions are broadly classified according to the Speed with which they break when contacted with aggregate.
Rapid Setting Emulsion (RS)
Rapidly destroys even coarse aggregate with a relatively small surface area. Quick-drying emulsions are further divided into RS-1 and RS-2 types.
Medium Setting Emulsion (MS)
A fracture occurs very slowly, so emulsions can be mixed with coarse aggregates that are rich in fines.
Slow Setting Emulsion (SS)
Break is sufficiently slow to allow mixing with aggregate containing fine material of relatively high surface area. Slow setting emulsion is further sub divided into SS-1 and SS-2 types.
Advantages of Bitumen emulsion
Economically, Technologically and Environmentally Bitumen Emulsion proved to be a great solution. In addition to saving money on power consumption by one and a half time, production of emulsion requires 30-40% less bitumen than in hot bitumen application. Also the Emulsions produced in Tiger Bitumen equipment are environmentally friendly and do not need high temperature for production or application. As it is a well-known fact that the environment suffers from carcinogenic emissions formed as a result of petroleum products the breakdown.
| Specifications of Tack Coat Bitumen K1-30, K1-40, K1-60 and K1-70 | |||||
| PROPERTIES | K1-30 | K1-40 | K1-60 | K1-70 | Test Method |
| Tests on Emulsion | min-max | min-max | min-max | min-max | |
| Viscosity, SF, 50°C, SFs | 20 max | 25 max | 20 – 100 | 20 min | ASTM D7496 |
| Sieve Test, #20, % | 0.1 max | 0.1 max | 0.1 max | 0.1 max | ASTM D6933 |
| Storage Stability, 24h, % | 1 max | 1 max | ASTM D6930 | ||
| Demulsibility, 35ml DOSS 0.8%, % | 40 min | ASTM D6936 | |||
| Residue by Distillation, 260°C, % | 30 min | 40 min | 60 min | 67 min | ASTM D6997 |
| Solvent, by volume of emulsion,% | 3 max | ASTM D6997 | |||
| Oil Portion of Distillate (V/M), % | 4 max | ASTM D6997 | |||
| Particle Charge | ( + ) | ( + ) | ( + ) | ( + ) | ASTM D244 |
| Tests on Residue | |||||
| Penetration, 25°C, dmm | 60 – 200 | 60 – 200 | 100 – 250 | 60 – 250 | ASTM D5 |
| Solubility in TCE, % | 97.5 min | 97.5 min | 97.5 min | 97.5 min | ASTM D2042 |
| Ductility, 25°C, cm | 40 min | 20 min | ASTM D113 | ||
| Emulsion Cationic Bitumen Medium Setting CMS-2 Specifications | |||
| PROPERTIES | CMS-2 | ||
| Tests on Emulsion | min-max | ||
| Viscosity, SF, 25°C, SFs | |||
| Viscosity, SF, 50°C, SFs | 50-400 | ||
| Sieve Test, #20, % | 0.1 max | ||
| Settlement, 5 days, % | 5 max | ||
| Storage Stability, 24h, % | |||
| Demulsibility, 35ml DOSS 0.8%, % | |||
| Cement Mixing Test, % | |||
| Coating Test, % | 80 min | ||
| Residue by Distillation, 260°C, % | 65 min | ||
| Oil Portion of Distillate (V/M), % | 10 max | ||
| Particle Charge | ( + ) | ||
| Tests on Residue | |||
| Penetration, 25°C, dmm | 100 – 250 | ||
| Solubility in TCE, % | 97.5 min | ||
| Ductility, 25°C, cm | 60 min | ||
| Emulsion Cationic Bitumen Slow Setting CSS-1 and CSS-1H Specifications | |||
| PROPERTIES | CSS-1 | CSS-1H | |
| Tests on Emulsion | min-max | min-max | |
| Viscosity, SF, 25°C, SFs | 20 – 100 | 20 – 100 | |
| Viscosity, SF, 50°C, SFs | |||
| Sieve Test, #20, % | 0.1 max | 0.1 max | |
| Settlement, 5 days, % | 5 max | 5 max | |
| Storage Stability, 24h, % | |||
| Demulsibility, 35ml DOSS 0.8%, % | |||
| Cement Mixing Test, % | 2 max | 2 max | |
| Coating Test, % | 80 min | 80 min | |
| Residue by Distillation, 260°C, % | 57 min | 57 min | |
| Oil Portion of Distillate (V/M), % | 5 max | 5 max | |
| Particle Charge | ( + ) | ( + ) | |
| Tests on Residue | |||
| Penetration, 25°C, dmm | 100 – 250 | 40 – 125 | |
| Solubility in TCE, % | 97.5 min | 97.5 min | |
| Ductility, 25°C, cm | 60 min | 40 min | |
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