General Description of Bitumen Emulsion CSS-1h
RAHA Group Bitumen Emulsion CSS-1h is a cationic bitumen emulsion containing a minimum of 57% bitumen. is black in color and is manufactured strictly as per ASTM D 2397M-13 standard. It’s specially designed water-based Bitumen Emulsion with high viscosity and extended setting time makes it an ideal product for prime coating on highly porous surfaces. It is dark brown in color and is a free-flowing liquid at ambient temperature.
Bitumen Emulsion CSS-1h is a slow-setting cationic asphalt emulsion that is designed for various paving and industrial uses.
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 slow-setting emulsion is designed to maximize the mixing time with aggregates.
Longer workability times ensure a good coating on dense-graded aggregates with a high fines content. Longer workability times ensure good coating with dense graded, high fines content aggregates. The setting speed of any emulsion is relative to atmospheric conditions at the time of construction.
Application of Bitumen Emulsion CSS-1h
Prime coat CSS-1h is a low viscosity emulsion used mainly for prime coating in place of cutback asphalt.
RAHA Group Bitumen Emulsion CSS-1h ASTM is designed for use in slurry seals and for cold storable mixtures for patching. They are designed for soil stabilization and also suitable for use with cold recycling. These emulsions are tailor-made as per the quality of aggregates and local site conditions.
CSS-1h can be used successfully for tack coats, fog seals, and as a dust suppressant. Long workability times make it ideal for dense graded emulsion base mixes and base stabilization. One non-paving use is the mulch treatment of soil that has been seeded and fertilized.
Also, CSS-1h is an absorptive surface material (like low to medium high porosity wet mix macadam or water bound macadam), designed to penetrate, plug the capillary voids in the surface, bond, and stabilize the existing surface and to promote adhesion between it and the construction course that follows. RAHA Group Bitumen Emulsion CSS-1h is ideally suited for Prime Coat application on high porous surfaces like WBM. It can also be used as Fog Seal Application.
For pavement bases and surfaces:
Bituminous applications
- Plant mix (cold): with both dense-graded aggregate and sand
Mixed-in-place:
- Dense-graded aggregate
- Sand
- Sandy soil
- Slurry seal
Bituminuos Application:
- Fog Seal
- Prime coat-penetrable surface
- Tack coat
- Dust Binder
- Mulch Treatment
- Crack filler
Application Guidelines
- May be further diluted with potable water (max 50%)
- Do not apply CSS-1h if precipitation is anticipated.
- Do not dilute the product with any cutter stock.
- Contact RAHA Marketing representative for guideline application temperatures.
TACK COATS
CSS-1h applied to an existing pavement surface will eliminate slippage planes and provide a bond with the new asphalt lift. It will deliver a strong bond and it will not track under construction traffic. Spray rates range from 0.25 to 0.70 L/m2 (0.05 to 0.15 gal/yd2).
FOG SEALS
CSS-1h is applied to an existing asphalt surface that has become oxidized with age in order to renew it and to seal narrow cracks and surface voids. Because of its quick cure and non-tracking properties, conventional sand blotting is often not required. A spray rate in the order of 0.45 to 0.70 L/m2 (0.10 to 0.15 gal/yd2) is typical but depends on the surface texture and degree of cracking.
DUST CONTROL
CSS-1h is ideal for spraying on low volume, unpaved roads as a means of dust control. This emulsion is usually diluted with water to further decrease its viscosity in order to enhance its penetration into the existing surface. The diluted CSS-1h is sprayed in repeated light applications at a rate of 0.45 to 2.25 L/m2 (0.1 to 0.5 gal/yd2) depending on the condition of the existing surface.
DENSE GRADED EMULSION MIXES
Dense-graded emulsion mixes are produced at a central plant or in place by mixing CSS-1h using dense-graded aggregates with relatively high fines content. CSS-1h provides a mix that is workable on the job site immediately after mixing or when the mix is produced at a plant and trucked to the site. Application rates will vary depending on aggregate type and gradation. A mixed design is highly recommended.
BASE STABILIZATION
Base stabilization is an insitu rehabilitation process for pavements composed of asphalt concrete over a granular base. The process involves the pulverization of asphalt concrete and mixing it with the base course. This is followed by the stabilization of the resulting granular material with CSS-1h. A mixed design is highly recommended to determine the appropriate asphalt emulsion content.
Storage and Handling CSS-1h
- CSS-1h should be stored in bulk tanks, ideally vertical to minimize surface area
- Do not allow CSS-1h to either freeze or boil: it will break. Safe storage temperatures range from 10°C (50°F) to 85°C (185°F).
- In bulk storage, mix the CSS-1h every 1 to 2 weeks (more frequently in cold weather). Mixing may be done by paddle agitator (slow), loose gear pump, slow centrifugal pump, or another suitable low shear pump.
- Do not bubble air through CSS-1h to agitate it: this creates excessive foam and may cause the CSS-1h to break
- Always use clean storage containers. Make sure prior contents are compatible with CSS-1h or the emulsion may break
Advantage of Asphalt Emulsion CSS-1h
At the following you can find some advantages of this product:
- Environment friendly
- No heating requires, cost-efficient
- Bound well with cool, damp surfaces
- High adhesive properties
- Low-temperature curing
- Penetrate the cracks and impart strength to the layers
Packing of Asphalt Emulsion CSS-1h
RAHA Group Bitumen Emulsion CSS-1h is available in:
- Bulk as IBC Tank, FlexiTank
- Reconditioned steel drums 220 lit., Net Weight: 200 ± 3 Kg
- New steel drums 220 lit., Net Weight: 200 ± 3 Kg
Product Support
With the RAHA Advantage, you get a partner and advisor who will consult with you about designs, specifications, technical services, processes, and material selection. By developing innovative, custom-designed products that offer additional benefits such as peak performance in unique conditions, improved field performance, and greater environmental and health benefits, the RAHA Advantage provides significant long-term cost savings, resulting in a lower total cost of ownership.
Each lot of CSS-1h is produced using the strictest quality, safety, and environmental guidelines. Each production lot is tested to ensure it meets or exceeds all performance requirements and is delivered with a Certificate of Analysis
TEMPERATURE VISCOSITY CHART
Specification of Bitumen Emulsion CSS-1h
Emulsion Type: Slow-Setting
Grade: CSS-1h
Standard: ASTM D 2397M – 13
| PropertyProperty | Min | Max | Test Method |
| Test on Emulsions | |||
| Viscosity, Saybolt Furol at 25 °C, SFS | 20 | 100 | ASTM D244 |
| Storage stability test, 24-h, % | – | 1 | ASTM D6930 |
| Particle charge test | positive | ASTM D244 | |
| Sieve test, % | – | 0.1 | ASTM D6933 |
| Cement mixing test, % | 2.0 | ASTM D6935 | |
| Distillation: | |||
| Residue, % | 57 | – | 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 |
