Tack Coat Bitumen Emulsion,Asphalt Emulsions ,Cationic Bitumen Emulsion Slow Settings CSS-1

Tack Coat Bitumen Emulsion/Asphalt Emulsions  /RS 1 Cationic Bitumen Emulsion

Cationic Bitumen Emulsion – Grade RS 1, RS 2, MS, SS 1 And SS 2.
An emulsion is a dispersion of small droplets of two immiscible liquids. Bitumen Emulsions are the homogenous dispersion of Bitumen in water produced by mixing of these two ingredients using attrition force and stabilized using emulsifier-chemical blends in a highly specialized and controlled process. Due to presence of Positive charge on the surface of dispersed Bitumen, they are referred as Cationic Bitumen Emulsion. Bitumen Emulsions which normally contain from 50 to 67% of residual bitumen are free flowing brown liquids at room temperature.  As per SA Standard (IS-8887 five grades of Cationic Bitumen Emulsions are available:
Rapid Setting (RS-1)	Provides rapid deposition - mainly used for Tack Coat.
Rapid Setting (RS-2)	Provides rapid deposition – mainly used for Tack Coat and Surface Dressing.
Medium Setting (MS)	A versatile grade, Provides Comparatively slower deposition, used for Repair work/surface dressing, Plant or road mixes with coarse aggregates and Penetration macadam.
Slow Setting-1 (SS-1)	Consumes long time to form bituminous film with best penetration on a porous medium, used for Prime coat, Crack sealing and Fog Seal.
Slow Setting-2 (SS-2)	Low in solvents, provides slow deposition of bituminous film, used for plant or road mixes like MSS, SDBC, Slurry Seal and for Prime coat applications.
The International Standard (ASTM D 2397-05) materials in four grades with sub-grades are available (which differ prominently in their chemical and setting profiles) as:
1- Rapid Setting Sub-grade : CRS-1 & CRS-2  2- Medium Setting Sub-grade : CMS-2 & CMS-2h  3- Slow Setting Sub-grade : CSS-1 & CSS-1h  4- Quick Setting Sub-grade : CQS-1H

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