CMS-2h is a medium-setting cationic asphalt emulsion that reacts quickly with the aggregate to convert from an emulsion to asphalt. Asphalt emulsions are classified according to the electric charge that surrounds the emulsion’s asphalt particles and how quickly the suspended asphalt particles separate from the surrounding water. Bitumen Emulsion CMS-2h can be used for chip sealing when using dirtier aggregate. However, because it is medium-setting, traffic control may have to be adjusted.
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.
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Application of Bitumen Emulsion CMS-2h
CMS-2 is a medium-setting cationic asphalt emulsion that reacts quickly with the aggregate to convert from an emulsion to asphalt.
Asphalt emulsions are classified according to the electric charge that surrounds the emulsion’s asphalt particles (i.e. whether it is a cationic or an anionic emulsion) and how quickly the suspended asphalt particles separate from the surrounding water (“breaking”). A medium-setting emulsion is one that will break moderately fast when in contact with aggregate. Emulsion asphalt CMS-2 is a cationic emulsion. Emulsion asphalt CMS-2 is usually made by passing the mixture of hot bitumen and water phase between a rotating disc, cone or wheel and a stator. 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.
Packing of Bitumen Emulsion CMS-2h
Packing of bitumen emulsion CSS-1 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 CMS-2h
| Property | min | max | Test method |
|---|---|---|---|
| Test on emulsions | |||
| Viscosity, Saybolt Furol at 50 °C, SFS | 50 | 450 | ASTM D244 |
| Storage stability test, 24-h, % | – | 1 | ASTM D6930 |
| Coating ability and water resistance: | |||
| 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 |
| Distillation: | |||
| Oil distillate, by volume of emulsion, % | – | 12 | ASTM D6997 |
| Residue, % | 65 | – | ASTM D244 |
| Tests on residue from distillation test: | |||
| Penetration, 25°C (77°F), 100 g, 5 s | 40 | 90 | ASTM D5 |
| Ductility, 25°C (77°F), 5 cm/min, cm | 40 | – | ASTM D113 |
| Solubility in trichloroethylene, % | 97.5 | – | ASTM D2042 |
