Bitumen Emulsion SS-1h
DESCRIPTION OF ANIONIC BITUMEN EMULSION SS-1H
Anionic Bitumen Emulsion SS-1h is a specialized and versatile product offering multiple applications in the realm of asphalt. It is a slow-setting asphalt emulsion with an anionic composition, featuring a minimum of 57% bitumen content. Designed to excel as a tack coat, it finds great utility in fine-graded mixes, dust control, fog seal applications, and various specialty uses. Formulated with a harder base that exhibits lower penetration, SS-1h is specifically tailored for deployment in warmer climates. This slow-setting anionic emulsion possesses low reactivity, low viscosity, and leaves behind a firm asphalt residue. It serves a wide range of paving and industrial purposes, including patching, paving, and coating processes. SS-1h Asphalt Binder plays a pivotal role in promoting strong adhesion between bituminous concrete products and coatings. Compliant with ISSA requirements, this anionic asphalt emulsion serves as an excellent tack coat, facilitating optimal bonding during construction activities. Asphalt emulsions are categorized based on the electric charge surrounding the asphalt particles within the emulsion, distinguishing between cationic and anionic variants. Additionally, their speed of separation from water, known as “breaking,” influences their classification. As a slow-setting emulsion, SS-1h is engineered to maximize the duration of mixing time with aggregates. Extended workability times ensure thorough coating on dense-graded aggregates containing a significant amount of fines. It is important to note that the setting speed of any emulsion is influenced by the prevailing atmospheric conditions during construction, underscoring the need for careful consideration of environmental factors.
ENHANCED DESCRIPTION OF APPLICATION
The application of anionic bitumen emulsion SS-1h involves utilizing an electric field to obtain the anionic emulsion, with the droplets migrating from the anode. SS-1h is a specific type of bitumen emulsion, characterized by its anionic properties and slow-setting nature. The emulsion comprises particles with a size range of 0.1 to 5 microns, and the commonly used emulsifier for producing SS-1h is an alkaline salt combined with Ammonium Salt, which effectively brings together the bitumen and water droplets. SS-1h Anionic Bitumen Emulsion finds extensive application as a slow-setting asphalt emulsion with diverse purposes. It is primarily used as a tack coat prior to the placement of Hot Mix Asphalt (HMA), as well as in fine-graded mixes, dust control, fog seal applications, and other specialized uses. Slow-setting asphalt emulsions like SS-1h are known for their high stability and can be applied at full strength or diluted with water to adjust viscosity or meet specific construction requirements. Formulated with a hard-based asphalt, SS-1h acts as a robust bonding agent when applied as a paving tack coat, facilitating strong adhesion between different layers of pavement. The application rate can be adjusted depending on the desired bond strength, with higher rates generally resulting in stronger bonds. The curing time of the emulsion varies based on the rate of application, while external factors such as weather, temperature, and surface conditions influence the curing/breaking process. For prime coat applications, SS-1h anionic bitumen emulsion is typically sprayed at ambient temperature, ranging from 0.50 to 1.00 liters per square meter. A common rate of 0.7 liters per square meter is often employed. It is essential to apply SS-1h using a properly calibrated distributor operated by experienced personnel. SS-1h can be applied under the same conditions as the subsequent pavement placement, but extreme weather conditions can affect the breaking time and bond strength. It is crucial to avoid using SS-1h when pavement or ambient temperatures approach or fall below freezing, as this can significantly compromise performance and bond strength. If dilution of SS-1h is necessary, it is important to add water to the emulsion at a temperature equal to or higher than the concentrate emulsion temperature, up to a maximum of 200°F (93°C).
GUIDELINES FOR APPLICATION
- Dilution: SS-1h can be further diluted with potable water if needed. Ensure that the water used for dilution meets the required standards.
- Weather Conditions: Avoid applying SS-1h if precipitation is expected. It is advisable to wait for suitable weather conditions before proceeding with the application.
- Avoid Cutter Stock: Refrain from diluting the product with any type of cutter stock. It is recommended to use potable water for dilution purposes.
- Consult RAHA OIL Marketing: For specific application temperature guidelines, please get in touch with a representative from RAHA OIL Marketing. They will provide you with the necessary information to ensure optimal application results.
DESIGN GUIDELINES
Sand seal designs should be developed prior to initial production and reviewed whenever there are changes in sand sources. To ensure a high-quality seal, it is strongly advised to conduct testing on the final products. RAHA OIL Technical Services offers comprehensive mix design services and product quality analysis to support these endeavors.
TACK COATS: When applying SS-1h to an existing pavement surface, it effectively eliminates slippage planes and forms a strong bond with the new asphalt layer. It provides exceptional bonding capabilities while resisting tracking under construction traffic. The recommended spray rates range from 0.25 to 0.70 L/m2 (0.05 to 0.15 gal/yd2).
FOG SEALS: SS-1h is used to rejuvenate aged asphalt surfaces and seal narrow cracks and surface voids. Due to its quick curing and non-tracking properties, traditional sand blotting is often unnecessary. The suggested spray rates typically range from 0.45 to 0.70 L/m2 (0.10 to 0.15 gal/yd2), depending on the surface texture and extent of cracking.
DUST CONTROL: SS-1h is an excellent solution for dust control on low-volume, unpaved roads. It is usually diluted with water to reduce viscosity and enhance penetration into the existing surface. The diluted SS-1h should be applied in multiple light applications, with rates varying from 0.45 to 2.25 L/m2 (0.1 to 0.5 gal/yd2), depending on the condition of the surface.
DENSE GRADED EMULSION MIXES: Dense-graded emulsion mixes can be produced either at a central plant or directly on-site by mixing SS-1h with dense-graded aggregates containing a significant proportion of fines. This allows for immediate workability on the job site after mixing, or when the mix is produced at a plant and transported to the location. Application rates will differ based on the type and gradation of the aggregates used. It is strongly recommended to employ a mix design process.
BASE STABILIZATION: Base stabilization is an in-situ rehabilitation technique for pavements comprised of asphalt concrete over a granular base. The process involves pulverizing the asphalt concrete and blending it with the base course, followed by stabilizing the resulting granular material with SS1. A mix design is highly recommended to determine the appropriate content of asphalt emulsion for optimal results.
PACKING, STORAGE, AND HANDLING OF SS-1H
TO ENSURE PROPER STORAGE AND HANDLING OF SS-1H, THE FOLLOWING GUIDELINE SHOULD BE FOLLOWED:
- Storage: SS-1h should be stored in bulk tanks, preferably in a vertical position to minimize the exposed surface area. It is important to prevent freezing or boiling of the emulsion, as it can cause the emulsion to break. Maintain a safe storage temperature ranging from 10°C (50°F) to 85°C (185°F).
- Mixing: In bulk storage, it is recommended to mix the SS-1h every 1 to 2 weeks, especially in colder weather conditions. Mixing can be performed using a paddle agitator (at a slow speed), loose gear pump, slow centrifugal pump, or any other suitable low shear pump. Avoid bubbling air through the emulsion for agitation, as this can lead to excessive foam formation and potential emulsion breakage.
- Container cleanliness: Always use clean storage containers for SS-1h. Ensure that any previous contents of the containers are compatible with SS-1h to prevent emulsion breakage.
- Sampling: Use approved and sealed containers specifically designed for sampling the emulsion. This helps maintain the integrity of the emulsion during the sampling process.
By adhering to these guidelines, the packaging, storage, and handling of SS-1h can be effectively managed to maintain the quality and stability of the emulsion.
KEY FEATURES AND BENEFITS OF ASPHALT EMULSION SS-1H
SS-1H ASPHALT EMULSION OFFERS SEVERAL NOTABLE FEATURES AND BENEFITS, INCLUDING:
- Emulsion Stability: SS-1h is a highly stable emulsion that maintains its quality over an extended period, ensuring a reliable product with a long shelf life.
- Easy Handling and Storage: With its user-friendly properties, SS-1h simplifies the handling and storage process. It can be conveniently stored and transported, enhancing overall efficiency.
- Versatile Tack Coat: SS-1h serves as an effective tack coat for Hot Mix Asphalt (HMA) placement in various climates. Its versatile nature allows for reliable bonding between pavement layers, promoting long-lasting performance.
By offering excellent stability, convenient handling, and the ability to function as a dependable tack coat, SS-1h Asphalt Emulsion provides distinct advantages for asphalt-related applications.
TECHNICAL DATA SHEET OF ANIONIC BITUMEN EMULSION SS-1H
Emulsion Type: Slow-Setting
Grade: SS-1h
| PROPERTIES | MIN | MAX | TEST METHOD |
|---|---|---|---|
| Viscosity SSF , 25 °C (s) 20 100 ASTM D244 | 20 | 100 | ASTM D244 |
| Viscosity SSF , 50 °C (s) | ---- | ---- | ASTM D244 |
| Storage stability, 24h (%) | ---- | 1 | ASTM D6930 |
| Demulcibility , 0.02 N CaCl2 (%) | ---- | ---- | ---- |
| Cement mixing (%) | ---- | 2 | ---- |
| Sieve (%) | ---- | 0.1 | ASTM D6933 |
| Residue (%) | 57 | ---- | ASTM-D244 |
| Solubility in trichloroethylene % | 97.5 | ---- | ASTM D2042 |
| Penetration 77°F (25°C) 100g,5s mm | 40 | 90 | ASTM D5 |
| ductility, 77°F (25 °C), 5cm/min (cm) | 40 | ---- | ASTM D113 |
