General definition of Cationic Bitumen Emulsion CRS-2
Bitumen Emulsion CRS-2 is a specially designed water-based Bitumen Emulsion with high viscosity and fast setting that makes it an ideal product for Tack Coat spray application but one of the main applications of CRS emulsion is surface treatment (Chip seal, sand seal, and fog seal by cement curing). CRS-2 is a cationic rapid-setting bitumen emulsion that contains 65% bitumen, is black in color, and is manufactured strictly as per ASTM D 2397M-13 standard. Cationic Bitumen Emulsion CRS-2 is a rapid-setting cationic asphalt emulsion that reacts quickly with aggregate to convert from an emulsion to asphalt. Bitumen emulsion consists of three basic ingredients: bitumen, water, and an emulsifying agent. Based on specifications it may contain other additives, such as stabilizers, coating improvers, anti-strips, or break control agents. It is well known that water and asphalt will not mix, except under carefully controlled conditions using highly specialized equipment and chemical additives.
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Application of Bitumen Emulsion CRS-2
While general guidelines can be given for selecting emulsions, laboratory testing is strongly recommended. There is no substitute for a laboratory evaluation of the emulsion and the aggregate to be used. Different types and quantities of emulsion should be tried with the aggregate to find the best combination for the intended use. An experienced technician can determine the type and grade of the emulsion to be used.
- Environmental considerations.
- Proper application for pavement preservation or pavement distresses.
- Traffic type and volume.
Advantages of Bitumen Emulsion CRS-2
- Wide variety of emulsion types available today
- Economical
- Free from danger ( for fire )
- Environmental
- Harmless for worker health.
Packing of Emulsion CRS-2
Packing of Bitumen Emulsion CSS-2 is in a new thick steel drum on a pallet to prevent any leak inside of container also bulk in bitutainer and tanker.
Specification of Bitumen CRS-2
| Property | min | max | Test method |
|---|---|---|---|
| Viscosity, Saybolt Furol at 50 °C, SFS | 50 | 450 | ASTM D244 |
| Storage stability test, 24-h, % | __ | 1 | ASTM D6930 |
| Coating, dry aggregate | Good | __ | ASTM D244 |
| Coating, after spraying | Fair | __ | ASTM D244 |
| Coating, wet aggregate | Fair | __ | ASTM D244 |
| Coating, after spraying | Fair | __ | ASTM D244 |
| Particle charge test | Positive | Positive | ASTM D244 |
| Sieve test, % | __ | 0.1 | ASTM D6933 |
| Oil distillate, by volume of emulsion, % | __ | 12 | ASTM D6997 |
| Residue, % | 65 | __ | ASTM D244 |
| Penetration, 25°C (77°F), 100 g, 5 s | 100 | 250 | ASTM D5 |
| Ductility, 25°C (77°F), 5 cm/min, cm | 40 | __ | ASTM D113 |
| Solubility in trichloroethylene, % | 97.5 | __ | ASTM D2042 |
