VISCOSITY GRADE BITUMEN
IS Standard – VG 20
Viscosity Grade Bitumen (VG 20) is a highly adaptable bitumen grade tailored for road construction projects in regions with moderate to warmer climates. Its balanced viscosity and excellent binding properties make it an ideal choice for creating durable and high-performance road surfaces. Bitumen VG 20 ensures that roads can withstand varying traffic loads and environmental conditions, providing a reliable and long-lasting solution for infrastructure development.
USES:
Bitumen VG 20 is suitable for a wide range of road construction and maintenance applications. Its versatility and balanced viscosity make it ideal for use in:
Dense Bituminous Macadam (DBM): Bitumen viscosity grade 20 is commonly used in the construction of DBM layers, providing a strong and stable base for road surfaces. This ensures the longevity and durability of the pavement.
Hot Mix Asphalt: Viscosity grade 20 is an excellent choice for hot mix asphalt, which is used to create smooth and durable road surfaces. Its binding properties ensure that the aggregates are well-coated, resulting in a high-quality pavement.
Waterproofing and Damp-Proofing: Bitumen VG 20’s water-resistant properties make it suitable for waterproofing applications, protecting structures from water infiltration and damage.
Bituminous Primers: Viscosity grade 20 is used as a primer in surface preparation, enhancing the adhesion of subsequent bituminous layers and ensuring a strong bond.
KEY FEATURES
Bitumen viscosity grade 20 is characterized by several key features that make it a preferred choice for various road construction and maintenance applications:
Enhanced Temperature Susceptibility: Viscosity grade 20 has a balanced viscosity that makes it suitable for warmer regions, ensuring it remains workable and effective at higher temperatures.
Superior Binding and Adhesion: Bitumen VG 20 provides excellent adhesion to aggregates, ensuring a strong and durable bond that enhances the structural integrity of the pavement.
Improved Aging Resistance: Viscosity grade bitumen 20 is formulated to resist aging and oxidation, ensuring that the pavement retains its properties and performance over time.
Durability: The superior binding properties and resilience of bitumen viscosity grade 20 ensure that pavements constructed with this grade of bitumen can withstand varying loads and environmental conditions, providing long-term durability.
TECHNICAL SPECIFICATIONS
Bitumen VG 20 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: Viscosity grade 20 has a penetration value of 60-80, indicating its balanced consistency suitable for moderate to warmer climates.
-
Viscosity: Bitumen VG 20 has a viscosity of 1600-2400 poise at 60°C, ensuring its suitability for warmer regions and ease of application.
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Softening Point: The softening point of bitumen VG 20 is typically around 50-60°C, ensuring it remains stable and effective at higher temperatures.
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Ductility: Viscosity grade bitumen 20 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
|
60
|
-
|
IS 1203
|
|
Absolute Viscosity @60°C, Poise
|
POISE
|
1600
|
2400
|
IS 1206 (Part 2)
|
|
Kinematic Viscosity @135°C, cSt, min
|
CST
|
300
|
-
|
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
|
45
|
-
|
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
|
50
|
-
|
IS 1208
|
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