CRS-1

One of the method for modifying bitumen is emulsification with water which enhance bitumen properties incredibly. Another advantages of modification is that it can be applied cold (80°C). Emulsion bituminous asphalt consist of two immiscible liquids which are stabilized by emulsifier. They usually used for tack coats, hot-mixed asphalt, prime coats, chip seal. Firstly Anionic emulsion were developed and because cationic emulsion has more adhesion properties they are more favored especially in tack coating. The type (chemistry) of the emulsifying agent used, determines the designation. During application, the water in a bitumen emulsion is either lost by evaporation, or it may separate from the bitumen because of the chemical nature of the surface to which the emulsion is applied. This process is referred to as breaking.

Depending on the type of emulsifier the bitumen particles can be both positive and negative. Emulsions in which the bitumen droplets are negatively charged are called anionic emulsions.   While, Emulsions in which the particles are positively charged are called cationic emulsions.

 

Bituminous asphalt emulsion CRS-1  is a rapid setting cationic asphalt, which has positive charge leading

 reaction between the emulsion and pavement. It contains 60% bitumen ,the primer bitumen which is used for emulsification is obtained from crude oil.

The main applications asphalt emulsion CRS-1 are tack coat, fog seal, Dust control and sand seal.

 

INTERNATIONAL BITUMEN SUPPLY guarantee to supply  cationic bitumen CRS-1  in compliance to the mentioned specification in table.

  

Packing: Bitumen supply is able to provide every packaging according to customers enquiry.

 

Specification of anionic bitumen CRS-1

 

Unit

Min

Max

Test method

Kinematic viscosity at 25°C

Cst

20

100

ASTM D244

Residue Penetration at 25 °C

mm/10

100

250

ASTM D5

Residue Ductility at 25 °C

cm

40

 

ASTM D113

Sieve test

%

 

0.1

ASTM D6933

Solubility in trichloroethylene

%

97.5

 

ASTM D2042

Distillation residue%

%

60

 

ASTM-D244