VISCOSITY GRADE BITUMEN
AC Standard – 40
Asphalt Cement (AC) 40 is a highly viscous bitumen grade designed for road construction and maintenance in extremely hot climates. It offers unparalleled durability, flexibility, and resistance to deformation, making it the ideal choice for constructing high-performance road surfaces under the most challenging conditions. AC 40 bitumen is renowned for its exceptional binding properties, ensuring that pavements can withstand extreme environmental stresses and heavy traffic loads, providing a reliable and long-lasting solution for critical infrastructure projects.
USES:
AC 40 bitumen is suitable for a wide range of road construction and maintenance applications, particularly in regions with extremely hot climates. Its high viscosity and performance characteristics make it ideal for:
Regions: AC 40 is extensively used in hot mix asphalt for constructing smooth and durable road surfaces in extremely hot climates. Its binding properties ensure that the aggregates are well-coated, resulting in a high-quality pavement.
Heavy-Duty and Industrial Pavements: AC 40 is an excellent choice for constructing pavements that need to bear heavy loads, such as those in industrial areas, ports, airports, and highways.
Bituminous Macadam and Dense Graded Bituminous Mixes: AC 40 provides a strong and stable base for road surfaces, making it suitable for dense graded bituminous mixes.
Waterproofing and Damp-Proofing: AC 40’s water-resistant properties make it suitable for waterproofing applications, protecting structures from water infiltration and damage.
KEY FEATURES
AC 40 bitumen is characterized by several key features that make it a preferred choice for various road construction and maintenance applications:
Extremely High Viscosity and Stability: AC 40 has an extremely high viscosity that ensures stability and resistance to deformation in extremely hot climates. This makes it suitable for high traffic roads and heavy-duty pavements.
Superior Binding and Adhesion: AC 40 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 40 protect the underlying layers from water infiltration, preventing damage and extending the lifespan of the pavement or structure.
Durability: The superior binding properties and resilience of AC 40 ensure that pavements constructed with this grade of bitumen can withstand varying loads and environmental conditions, providing long-term durability.
TECHNICAL SPECIFICATIONS
AC 40 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 40 has a penetration value of 20-40, indicating its very stiff consistency suitable for extremely hot climates and high traffic conditions.
Viscosity: AC 40 bitumen has a viscosity of 3200-4000 poise at 60°C, ensuring its suitability for extremely hot regions and ease of application.
Softening Point: The softening point of AC 40 is typically around 70-80°C, ensuring it remains stable and effective at higher temperatures.
Ductility: AC 40 exhibits high ductility, allowing it to stretch and deform without breaking, which is crucial for withstanding the stresses of traffic loads and temperature fluctuations.
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
|
3200
|
4800
|
ASTM D2171
|
|
Kinematic Viscosity @ 135°C Min
|
CST
|
400
|
-
|
ASTM D2171
|
|
Flash Point °C
|
°C
|
232
|
-
|
ASTM D92
|
|
Solubility in Trichloroethylene %
|
%
|
99
|
-
|
ASTM D2042
|
|
Penetration in 25°C
|
0.1MM
|
40
|
-
|
ASTM D5
|
|
Spot Test
|
@
|
Negative
|
-
|
AASHTO 102
|
|
Tests on Residue from Rolling Thin Film Oven Test
|
||||
|
Viscosity 140°F (60°C) Max
|
P
|
-
|
20000
|
ASTM D2171
|
|
Ductility 77°F (25°C) 5cm/min, Min
|
CM
|
25
|
-
|
ASTM D113
|
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