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Bitumen Emulsion Cationic RS 

bitumen anionic emulsion RS-1 For anionic and emulsions, there are several grades of different breaking characteristics. Rapidsetting 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. Rapidsetting 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.

Advantage of Bitumen RS 2:
Easy spray Low temperature cure High adhesive properties Enhances structural strength of layers Prevents lateral movements of structural layers Water resistant and enhances easy drainage of water Provides an impervious layer to prevent water ingress from table below the road layers
Application of bitumen RS 2:
applications for grouting, penetration and sand sealing.

Surface Dressing:
It consists of application in one or two coats, each consisting of a layer of bituminous binder sprayed on a previously prepared base, followed by a cover of stone chips rolled in to form a wearing course. RS-2 type cationic bitumen emulsion is ideal for surface dressing on the shoulders and for protection of freshly laid base course. Typical rate of application for two coat surface dressing as per (MORT&H) clause 510.2 is 28-32 kg/10 sq. m.

For economical construction of low volume roads, a combined base and wearing courses can be made by an application of RATNAMANI RS-2 cationic bitumen emulsion on the laid and compacted aggregates. This application can be carried out even when the stone layer is damp.

Penetration Macadam:
It consists of construction of one or more layers of compacted crushed coarse aggregates with alternate application of bituminous binder and key aggregates to be used as base course on roads, subject to the requirements of the overall pavement design.

Sand Seal:
A bituminous sand application for existing pavement surface to seal the surface and to function as a light-wearing course.

Data Sheet of Bitumen RS 2:

Viscosity SSF , 25 °C (s) 20 100 ASTM D244
Storage stability, 24h (%) —  1 ASTM D6930
Demulcibility, 35ml, 8% dioctyl sodium sulfosuccinate, % 60   ASTM D6936
Cement mixing (%)    2  
Sieve (%)   0.1 ASTM D6933
Residue by distillation (%) 55   ASTM D244
Residue penetration, 25 °C 40 90 ASTM D5
Solubility in trichloroethylene % 97.5 ASTM D2042
Residue ductility, 25 °C, 5cm/min (cm) 40   ASTM D113
Penetration 77°F (25°C) 100g,5s mm 100 200 ASTM D5
ductility, 77°F (25 °C), 5cm/min (cm) 40   ASTM D113

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