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  • Place of Origin: West Bengal, India
  • Usage: Construction
  • Brand Name: STP LTD


Rapid Setting (RS)
Medium Setting (MS)
Slow Setting (SS)


Rapid Setting (RS)
The rapid setting grades are designed to react quickly with aggregate and revert from the
emulsion state to bitumen. They are used primarily for tack coat application and in spray
applications, such as aggregate (chip) seals, surface treatments, asphalt penetration macadam and grouting.

Medium Setting (MS)
The medium setting grades are designed for mixing with coarse aggregates and are ideal in
premix. Since these grades do not break immediately upon contact with aggregate, MS
grade used in aggregates remain workable for a few minutes. The MS grades have high
viscosity to prevent runoff. This type of emulsion is highly recommended for surface dressing work.

Slow Setting (SS)
The slow setting grades are designed for maximum mixing stability. They are used with
very high fine dense - grade aggregates. All slow - setting grades have low viscosity that can
be further reduced by adding water. These blends can be diluted (up to 50% diluted) prior coats, fog seals, and dust palliatives.

Areas of Application
Surface dressing is, by far, the largest use of ShaliMulsion; the most important properties of
ShaliMulsion being stability, viscosity, breaking and adhesivety.

It is also used as a tack coat and may be used for grouting, lean mix curing, patching, sealing of
formations and sub bases.

It is stable under storage and transport conditions and will break on application leading to the
bitumen content adhering strongly to the road / patches and/or chippings. It has low viscosity
for ease of handling and application. ShaliMulsion flows to minimise irregular
spraying but would not flow due to road irregularities, cambers or gradients. Emulsifiers
change surface dependent properties like rate of breaking and adhesivity.
STP produces two types of Bitumen Emulsion, ShaliMulsion A and ShaliMulsion C; each having
three ranges - fast setting (FS), medium setting (MS) and slow setting (SS). ShaliMulsion A and ShaliMulsion C both are cold applied - liquid bitumen emulsions which are used in the construction and repair of pavements, driveways, roads and highways. Both products
are water based and ready to use.
ShaliMulsion A
ShaliMulsion A is an Anionic Emulsion, and is most effective in coating positively charged aggregates such as lime stone and marble and works best in warm and dry conditions. It also has
application in soil stabilisation and patching road surfaces.
ShaliMulsion C
ShaliMulsion C is a Cationic Emulsion, and is more popular due to its ability to absorb on to a wider range of mineral aggregates than its Anionic counterpart. It results in better adhesion to mineral
aggregates, sets readily on all but the most electropositive aggregates and is effective for use in all weather conditions. Bitumen inside

It is eco/user friendly, pollution free and nontoxic.
It is applied cold and does not require special equipments like boiler, part mix plant, fuel and labour for heating and avoids fire hazard. The most significant advantage of ShaliMulsions is their application during all weather conditions including rain but excluding frost and heavy downfall. Their reliability, economy and use of application has led to the popularity of ShaliMulsion over hot applied bitumen in road surfacing. ShaliMulsion retains fluidity until the penetration in the aggregate mass is completed and, hence, there is no possibility of using excess bitumen, which weakens the
Application Method
ShaliMulsion is applied cold and at ambient temperature. Two bitumen particles in a
ShaliMulsion will coalesce if they come into contact. Contact is prevented by electric
charge repulsion and the mechanical protection offered by the emulsifier. Any effect that overcomes these forces will induce flocculation and coalescence. Flow of the ShaliMulsion, caused by pumping, heating (convection currents) or transport is one such effect. Some emulsifiers have a tendency to foam which is, itself, a potential cause of coalescence since bitumen particles in the thin film of a bubble are subjected to the forces of surface tension. Prior to application, surface should be cleaned of loose aggregates and dust. For better results, the surface should be slightly dampened with clean water immediately before application. Fluidity remains until penetration is completed and no additional material is required to ensure penetration. Brushes, sprayers and other tools used in application, should be cleaned with water prior to, and after their use to avoid contamination/breaking of ShaliMulsion on them. No brushing over ShaliMulsion shall be done till
it turned black. Workers should not be allowed to walk over uncovered area where ShaliMulsion has been applied till it breaks and forms a black surface.

Safety Measures
Keep adequate ventilation during application of the mix. Avoid deep breathing of vapours and skin contact. Use of gum boots, gloves, goggles, and nose covers is recommended. The ShaliMulsion barrels should be rolled well on the ground and thereafter the contents must be mixed thoroughly with a rod before drawing the emulsion for use. The cover should be replaced properly after drawing emulsion from the drum. Brushes, Sprayers, etc. should be cleaned with water before ShaliMulsion sets on them. No brushing over ShaliMulsion is to be done after it has turned black. If it rains before the ShaliMulsion has set, spread the aggregate and wait until the surface is dry before rolling and opening to traffic. On no account should workmen be allowed to walk over uncovered Bitumen Emulsion application.
Keep container sealed and under cover at temperature between 5oC to 35oC. Protect From Frost
Shelf Life
12 months under good storage condition in original, unopened container. Drum should be
turned or inverted at least once a month to reduce settlement.
In tankers and 200 Litre mild steel second-hand drums.
Do not heat and do not use them under frosty weather or in case of heavy downfall.
Do not open to traffic unless ShaliMulsion is broken and top surface has turned black.
Never mix two types of ShaliMulsions as this will cause coagulation.

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