VISCOSITY GRADE BITUMEN
AC Standard – 2.5
Asphalt Cement (AC) 2.5 is a soft grade of bitumen primarily used in colder climates for various paving and industrial applications. Its low viscosity and excellent flexibility make it an ideal choice for applications where the bitumen needs to remain workable at lower temperatures. AC 2.5 bitumen is known for its superior binding properties, ensuring durable and resilient surfaces.
USES:
AC 2.5 bitumen is suitable for a wide range of applications, particularly in regions with cold climates where higher viscosity bitumen might be too stiff to work with. Common applications of AC-2.5 include:
- Cold Mix Asphalt for Patching and Maintenance: AC 2.5 is extensively used in cold mix asphalt for repairing and maintaining bituminous pavements. Its low viscosity ensures ease of application and effective bonding at lower temperatures.
- Surface Dressing in Cold Climates: AC 2.5 is ideal for surface dressing in cold climates, where its flexibility and workability at lower temperatures ensure a strong bond with aggregates and a durable road surface.
- Asphalt Emulsions: AC 2.5 is used in the production of asphalt emulsions, which are applied in various road construction and maintenance processes. Its low viscosity and binding properties ensure effective emulsification and performance.
- Roofing and Waterproofing: AC 2.5’s superior waterproofing properties make it suitable for roofing and waterproofing applications, protecting structures from water infiltration and damage.
KEY FEATURES
AC 2.5 bitumen is characterized by several key features that make it a preferred choice for various applications in cold climates:
High Flexibility and Low-Temperature Performance: AC 2.5 remains flexible at lower temperatures, reducing the risk of cracks and deformation, which is particularly important in cold climates.
Superior Adhesion to Aggregates: AC 2.5 provides excellent adhesion to aggregates, ensuring a strong and durable bond that enhances the structural integrity of the pavement.
Waterproofing Properties: The waterproofing properties of AC 2.5 protect the underlying layers from water infiltration, preventing damage and extending the lifespan of the pavement or structure.
Ease of Application: Its low viscosity ensures that AC 2.5 bitumen can be easily applied, facilitating efficient construction and maintenance processes.
TECHNICAL SPECIFICATIONS
AC 2.5 bitumen is produced to meet stringent technical specifications set forth by the ASTM D 3381, ensuring consistent quality and performance. Key technical parameters include:
Penetration Value: AC 2.5 has a penetration value of 150-250, indicating its relatively soft consistency suitable for cold climates.
Viscosity: AC 2.5 bitumen has a viscosity of 250-350 poise at 60°C, ensuring its suitability for cold regions and ease of application.
Softening Point: The softening point of AC 2.5 is typically around 35-45°C, ensuring it remains workable and effective at lower temperatures.
Ductility: AC 2.5 exhibits high ductility, allowing it to stretch and deform without breaking, which is crucial for withstanding the stresses of traffic loads and temperature fluctuations in colder climates.
STORAGE:
Maintain storage temperatures between 150°C and 180°C to prevent hardening and ensure the bitumen remains workable.
Use steel containers or bitumen tanks that are designed to handle high temperatures and prevent contamination.
Ensure storage facilities are well-ventilated, dry, and protected from moisture to prevent oxidation and degradation.
Avoid prolonged storage at high temperatures and frequent temperature fluctuations, which can lead to the hardening and loss of essential properties.
PACKAGING:
Bitubox
Ideal for convenient bitumen transportation, cost-effective, and environmentally friendly packaging solution.
SPECIFICATIONS:
|
DESCRIPTION
|
UNIT
|
MIN
|
MAX
|
TEST METHOD
|
|---|---|---|---|---|
|
Dynamic Viscosity @ 60°C
|
P
|
200
|
300
|
ASTM D2171
|
|
Kinematic Viscosity @ 135°C Min
|
CST
|
125
|
-
|
ASTM D2170
|
|
Flash Point °C
|
°C
|
163
|
-
|
ASTM D92
|
|
Solubility in Trichloroethylene %
|
%
|
99
|
-
|
ASTM D2042
|
|
Penetration in 25°C
|
0.1MM
|
200
|
-
|
ASTM D5
|
|
Spot Test
|
@
|
Negative
|
-
|
AASHTO 102
|
|
Tests on Residue from Rolling Thin Film Oven Test
|
||||
|
Viscosity 140°F (60°C) Max
|
P
|
-
|
1250
|
ASTM D2171
|
|
Ductility 77°F (25°C) 5cm/min, Min
|
CM
|
100
|
-
|
ASTM D113
|
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