CATIONIC BITUMEN EMULSION
CRS 60 / CRS 1– Cationic Rapid Setting Bitumen Emulsion
Petra Oil’s CRS-1 is a fast-breaking cationic bitumen emulsion designed for light surface treatments, tack coats, and fog seals. Its low viscosity and rapid setting behaviour make it ideal for projects that demand quick application and minimal traffic disruption. CRS-1 offers excellent adhesion to both old and new asphalt surfaces, ensuring a strong and durable bond in various climatic conditions.
CRS-1 is widely used in chip seal operations involving fine aggregates. It’s equally suitable for rejuvenating aged pavements or sealing minor cracks and oxidized surfaces. The quick break time of CRS-1 minimizes aggregate loss and helps contractors complete surface treatments efficiently. It is also a preferred tack coat binder where fast track construction schedules are required.
Formulated with premium base bitumen and manufactured under strict compliance with AASHTO M208 standards, CRS-1 offers consistent quality, performance, and compatibility with a wide range of aggregates. Its cationic nature allows it to bond effectively with negatively charged aggregate surfaces, creating a reliable and uniform seal.
Key Specifications of CRS-1:
• Emulsion Type: CRS-1 (Cationic Rapid Setting)
• Bitumen Content: Typically 57–63%
• Viscosity: Low
• Break Time: Fast
• Standard Compliance: AASHTO M208
• Application: Spray using standard emulsion equipment
Main Applications of CRS-1:
• Light Chip Seals: Ideal for use with fine aggregate chips to protect and restore low-traffic roads and residential streets.
• Fog Seals: Applied as a rejuvenating layer to seal oxidized pavements, improve appearance, and reduce raveling.
• Tack Coats: Enhances the bond between old and new asphalt layers, reducing slippage and delamination risks.
• Preventative Maintenance: Used to extend pavement life by sealing micro-cracks and providing surface waterproofing.
Key Benefits of CRS-1
• Quick Setting Performance: Enables fast reopening to traffic, which reduces project downtime and increases overall efficiency.
• Superior Bonding Ability: Ensures excellent adhesion between asphalt layers and enhances the overall strength of the pavement.
• Easy Application: Low viscosity makes it highly sprayable and consistent, even under varying temperature and surface conditions.
• Cost-Effective Preservation: Extends the service life of roads at a low cost, making it ideal for municipalities and rural programs.
Specification of bitumen emulsion CRS-1
EMULSION PROPERTIES
|
MIN REQUIREMENTS
|
MAX REQUIREMENTS
|
TEST METHOD
|
---|---|---|---|
Binder content, % m/m
|
60
|
63
|
ASTM D244
|
Viscosity @ 50°C, SFs
|
20
|
50
|
ASTM D244
|
Residue on sieving, g/100ml
|
-
|
0.25
|
SABS 548
|
Particle charge
|
Positive
|
Positive
|
SABS 548
|
Sedimentation after 60 rotations
|
Nil
|
Nil
|
SABS 548
|
Fluxing agent content, % m/m of binder
|
-
|
5
|
ASTM D244
|

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Accra, Ghana.