VISCOSITY GRADE BITUMEN
IS Standard – VG 10
Viscosity Grade Bitumen 10, commonly known as VG 10, is one of the most widely used paving grade bitumen due to its versatile nature and adaptability to various climate conditions, particularly cooler regions. Its exceptional binding properties and resilience make it a crucial material in the construction and maintenance of roads, ensuring long-lasting durability and performance.
USES:
VG 10 bitumen is predominantly utilized in road construction and maintenance. Its lower viscosity makes it an ideal choice for cold climates where temperatures range from moderate to low. This characteristic enables that the bitumen remains workable even at lower temperatures, that provides a robust and long-lasting road surface. Some of the common applications of VG 10 include:
Surface Dressing and Top Layers: VG 10 is extensively used in surface dressing processes, which involve applying a bituminous binder on the road surface followed by an aggregate layer. This enhances the skid resistance and waterproofing properties of the road.
Penetration Macadam: This method involves spraying VG 10 bitumen on compacted layers of aggregate to create a durable and resilient road structure.
Asphalt Pavements in Cooler Regions: VG 10 is ideal for constructing asphalt pavements in cooler climates where higher viscosity bitumen might be too stiff to work with.
Repair and Maintenance:
Due to its excellent binding properties, VG 10 is commonly used for patching and repairing existing bituminous pavements, ensuring extended lifespan and durability.
KEY FEATURES
VG 10 bitumen is characterized by several key features that make it a preferred choice for various road construction and maintenance applications:
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High Adhesiveness: VG 10 provides excellent adhesion to aggregates, ensuring a strong bond that enhances the structural integrity of the pavement.
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Water Resistance: The waterproofing properties of VG 10 protect the underlying layers from water infiltration, preventing damage and extending the lifespan of the pavement.
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Flexibility: VG 10 remains flexible at lower temperatures, reducing the risk of cracks and deformation, which is particularly important in cooler climates.
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Durability: The superior binding properties and resilience of VG 10 ensure that pavements constructed with this grade of bitumen can withstand varying loads and environmental conditions, providing long-term durability.
TECHNICAL SPECIFICATIONS
VG 10 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:
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Penetration Value: VG 10 has a penetration value of 80-100, indicating its relatively soft consistency compared to higher viscosity grades.
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Viscosity: VG 10 bitumen has a viscosity of 800-1200 poise at 60°C, ensuring its suitability for cooler climates and ease of application.
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Softening Point: The softening point of VG 10 is typically around 40-45°C, ensuring it remains stable and effective in cooler temperatures.
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Ductility: VG 10 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
|
45
|
-
|
IS 1203
|
|
Absolute Viscosity @60°C, Poise
|
POISE
|
2400
|
3600
|
IS 1206 (Part 2)
|
|
Kinematic Viscosity @135°C, cSt, min
|
CST
|
350
|
-
|
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
|
47
|
-
|
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
|
40
|
-
|
IS 1208
|
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