Bitumen emulsion anionic SS1
Bitumen emulsion SS1 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.
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 size of 0.001 to 0.01 mm and become floating in 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 is contain lime.
Usage of anionic emulsion bitumen SS1 is two phases of water and bitumen which is not possible to mix and first inter phase is inside of outer phase.Particle size of 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 alkaline salt with Ammonium Salt in high speed mixer at ISO condition making bitumen SS1.
Application of bitumen SS1: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.
Data Sheet of Bitumen SS1:
|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|