VISCOSITY GRADE BITUMEN
IS Standard – VG 40
Viscosity Grade Bitumen VG 40 is engineered to meet the highest standards of road construction in extremely hot climates and heavy traffic conditions. This grade of bitumen is known for its exceptional durability and performance, making it the preferred choice for the most demanding infrastructure projects. VG 40 provides outstanding resistance to deformation and high temperature stability, ensuring the longevity and reliability of road surfaces.
USES:
VG 40 bitumen is suitable for a wide range of road construction and maintenance applications, particularly in regions with extremely high temperatures and heavy traffic loads. Its high viscosity and performance characteristics make it ideal for:
High Traffic and Heavy-Duty Roads: VG 40 is extensively used in the construction of high traffic roads and heavy-duty pavements, providing a durable and resilient surface that can withstand heavy loads and extreme temperatures.
Industrial and Airport Pavements: VG 40 is suitable for constructing pavements in industrial areas and airports, where the surfaces need to bear heavy loads and frequent use.
Bituminous Concrete for Heavy Load-Bearing Surfaces: VG 40 is an excellent choice for constructing bituminous concrete pavements that need to bear heavy loads and resist deformation.
High-Stress Applications: VG 40 is used in high-stress applications where the pavement needs to withstand significant mechanical stresses and high temperatures.
KEY FEATURES
VG 40 bitumen is characterized by several key features that make it a preferred choice for various road construction and maintenance applications:
Highest Softening Point Among VG Grades: VG 40 has the highest softening point among VG grades, making it suitable for extremely hot climates where temperatures can be extreme. This ensures that the bitumen does not become too soft and deform under high temperatures, maintaining the structural integrity of the pavement.
Exceptional Resistance to Rutting and Deformation: VG 40 offers superior resistance to rutting and deformation, which is essential for high-traffic roads and heavy-duty pavements. This ensures that the road surface remains smooth and safe even under heavy loads and high temperatures.
Superior Bonding and Longevity: VG 40 provides excellent adhesion to aggregates, ensuring a strong and durable bond that enhances the structural integrity of the pavement. Its superior binding properties ensure that pavements constructed with VG 40 can withstand varying loads and environmental conditions, providing long-term durability.
Waterproofing Properties: VG 40’s water-resistant properties protect the underlying layers from water infiltration, preventing damage and extending the lifespan of the pavement.
TECHNICAL SPECIFICATIONS
VG 40 bitumen is produced to meet
stringent technical specifications set forth by the Indian Standard IS 73: 2013, ensuring consistent
quality and performance. Key technical parameters include:
Penetration Value: VG 40 has a penetration value of 35-60, indicating its relatively stiff consistency suitable for extremely hot climates and heavy traffic conditions.
Viscosity: VG 40 bitumen has a viscosity of 3200-4800 poise at 60°C, ensuring its suitability for hot regions and ease of application.
Softening Point: The softening point of VG 40 is typically around 50-60°C, ensuring it remains stable and effective at higher temperatures.
Ductility: VG 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:
SPECIFICATIONS:
|
DESCRIPTION
|
UNIT
|
MIN
|
MAX
|
TEST METHOD
|
|---|---|---|---|---|
|
Penetration at 25°C, 100 gm, 5 s, 0.1 mm, min
|
MM
|
35
|
-
|
IS 1203
|
|
Absolute Viscosity @60°C, Poise
|
POISE
|
3200
|
4800
|
IS 1206 (Part 2)
|
|
Kinematic Viscosity @135°C, cSt, min
|
CST
|
400
|
-
|
IS 1206 (Part 3)
|
|
Flash Point (Cleveland Open Cup), °C, Min
|
°C
|
220
|
-
|
IS 1448 (P:69)
|
|
Solubility in Trichloroethylene, % min
|
%
|
99
|
-
|
IS 1216
|
|
Softening Point (R&B), °C , Min
|
°C
|
50
|
-
|
IS 1205
|
|
Tests on Residue from Rolling Thin Film Oven Test
|
||||
|
Viscosity Ratio @ 60°C, max
|
-
|
-
|
4
|
IS 1206 (Part 2)
|
|
Ductility @ 25°C cm, min
|
CM
|
25
|
-
|
IS 1208
|
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