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.
Advantages of CMS-2h
CMS-2h, a high-performance cationic bitumen emulsion, has several special benefits, especially in hot and dry climates. One of the significant benefits is that it performs well at high temperatures because it is of a higher viscosity compared to the standard CMS-2. This characteristic reduces the rate of evaporation so that the emulsion remains stable and effective even in warmer weather, which is essential for maintaining good adhesion to aggregates and improving the longevity of road surfaces.
CMS-2h also possesses very good bonding properties, which makes it highly suitable for use in hot-mix asphalt in addition to cold mix applications. Its durability and resistance to weathering ensure that roads treated with CMS-2h withstand high traffic and unfavorable environmental conditions. In addition, like all cationic emulsions, CMS-2h is simple and safe to apply, with no need for heating, and offers an environmentally friendly alternative to traditional hot bitumen. These advantages make CMS-2h a reliable choice for road construction and maintenance in regions of higher temperatures.
Packing of Bitumen Emulsion CMS-2h
Packing of bitumen emulsion CMS-2h 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 |
|---|---|---|---|
| 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 |
