Description
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 guidance may be provided regarding the selection of emulsions, testing in the laboratory is strongly recommended. There is no substitute for a laboratory test of the emulsion and the aggregate to be used. Different types and quantities of emulsion need to be tested with the aggregate to identify the best combination for the intended use. An experienced technician may determine the type and grade of the emulsion to be used.
Environmental conditions: Temperature and humidity levels where the CRS-2 is applied significantly affect the success of CRS-2. Because CRS-2 is a slow-set emulsion, curing rate can be affected by environmental conditions, and hence laboratory testing is required for best performance.
Correct application for pavement preservation or pavement distresses: CRS-2 is typically used in surface treatments like chip seals and for road maintenance to ensure pavement quality. It resists moisture intrusion and lengthens the life of the road by forming a high-quality bond with the aggregate and providing increased surface durability.
Traffic volume and composition: CRS-2 application is very effective for medium to heavy traffic locations. It has a slower curing time to allow the emulsion to form a stronger and longer-lasting bond, and therefore it is better for those roads with higher traffic volume which require a stronger surface. Good choice based on traffic load guarantees maximum performance and durability of treated pavement.
Packing of Bitumen 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
| 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 |
