Anionic Bitumen Emulsion SS-1 Description
Anionic Bitumen emulsion SS-1 is slow-setting, anionic type and are further characterized by their ability to remain stable on storage although produced with equipment that generates a wide range of shearing forces. Such characteristics are imparted to the asphalt emulsions through the use of emulsion-conditioner compositions comprising a partially desulfonated lignosulfonate, preferably an anionic or nonionic emulsifying agent and, optionally, a thickene.
For anionic and emulsions, there are several grades of different breaking characteristics. Rapid-setting emulsions are used for surface dressing, while medium or slow-setting emulsions are used for ‘mixtures’, that is mixed with aggregate either in concrete-type mixers or in situ. Rapid-setting emulsions are not used for mixtures because they would tend to set during the mixing process and clog the mixer. Generally, in making mixtures, the finer the aggregate used, the slower setting the emulsion that has to be used. Therefore, stone mixtures require medium-setting emulsions and sand mixtures require a slow-breaking emulsion. With anionic emulsions, the breaking process is predominantly by evaporation of the water in the emulsion continuous phase. Because of this, anionic emulsions are susceptible to temperature and humidity in terms of their breaking properties.
An Anionic emulsion has a negative charge, most of the things in the world are Anionic and that is why the majority of Research and Development, formulating, and lab testing has been done in the Industrial Coatings Industry to make coatings from Anionic systems. When an Anionic emulsion is mixed with a Cationic emulsion a strong bond develops and the result is the changing of the substance to a solid. This result is not ideal to be used as a coating because it cannot be applied to substrates.
Anionic Bitumen emulsion SS-1 Applications
Usage of anionic bitumen emulsion SS-1 is two phases of water and bitumen which are not possible to mix and the first interphase is inside of outer phase. The particle size of the emulsion is 0.1 to 5 micron. In normal conditions and without emulsifier the two parts of emulsion SS1 is unstable and quickly will segregate. By adding emulsifier into water and bitumen that is the alkaline salt with Ammonium Salt in the high-speed mixer at ISO condition making bitumen SS1.
Percentage of emulsifier is 3-5% and total water content is between 30-50%.By adding Emulsifier to bitumen and water we put anionic electron on the material and each particle of bitumen became like as circle with the size of 0.001 to 0.01 mm and become floating in the water. Using bitumen SS1 is environmental friendly since any flammable material or kerosene is not used and firing of the bitumen during the usage would be zero.
This kind of anionic bitumen has more adhesive to building material which contains lime.
Anionic Slow Setting bitumen Emulsion is the cold/non-fiberated liquid applied waterproofing bitumen emulsion. The product is made using a process in which the bitumen, special emulsifier, water and other additive have been gone through a high shear rate colloid mill and the properties of bitumen have the direct effect on the emulsion specification. This product has been specifically developed to provide waterproofing and building application, concrete and metal surface. The high flash point and the low solvent content make SS-1 an easy to use and a safe product. SS-1 can be applied by using a painting brush, squeegee, airless spray, and roller.
It is using for cold asphalt in cold or humid or sealing. Asphalt emulsions are widely used in highway construction, surfacing, and maintenance. They are also used in various other applications where water-repellent surfaces are needed. Slow-setting emulsions are grades of emulsions that are sufficiently stable to allow mixing with fine or dusty aggregate mineral particles and further processing before setting to a coherent mass. Such grades of asphalt emulsions (bitumen SS-1 grade), when anionic, react chemically with portland cement constituents forming a water-insoluble salt and thus possess valuable water-resistant characteristics.
Packing of anionic bitumen emulsion SS-1 is in the new thick steel drum on the pallet to prevent any leak inside of container also bulk in bitutainer and tanker.
Anionic Bitumen emulsion SS-1 Characteristics
|Viscosity SSF , 25 °C (s)||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|
|Solubility in trichloroethylene %||97.5||ASTM D2042|
|Penetration 77°F (25°C) 100g,5s mm||100||200||ASTM D5|
|ductility, 77°F (25 °C), 5cm/min (cm)||40||ASTM D113|