Bitumen VG-60 vs VG-70: Choosing the Right Grade for Road Projects

Introduction

In road construction, choosing the right grade of bitumen is as crucial as selecting the right foundation. Among the most commonly used viscosity-grade binders are VG-60 and VG-70—each with performance strengths tailored for specific environmental and load conditions.

In this article, we’ll compare VG-60 vs VG-70 bitumen in terms of viscosity, temperature tolerance, traffic suitability, and usage, helping civil engineers and contractors determine which grade fits best for their infrastructure needs.

Explore these solutions with Westinol’s Bitumen Products, trusted globally for consistency, certification, and export-ready packaging.

What Is VG Bitumen?

VG (Viscosity Grade) Bitumen is classified based on its viscosity at 60°C. Unlike penetration-grade bitumen, VG grading ensures more precise performance control in terms of flow resistance, heat stability, and load response.

Common VG grades include VG-10, VG-30, VG-40, and for heavy-duty applications, VG-60 and VG-70. These are typically used in hot climates, industrial zones, and heavy-traffic roads.

Bitumen VG-60: Overview

VG-60 is a high-viscosity grade designed for heavily trafficked roads and hot climates. It offers greater stiffness and rutting resistance under sustained axle loads.

Key Properties:

• Viscosity @ 60°C: 4800–7200 poise
• Kinematic Viscosity @ 135°C: Min. 250 cSt
• Flash Point: Min. 220°C
• Ductility @ 25°C: Min. 25 cm
• Softening Point: Min. 50°C
• Penetration: 40–60 dmm

Ideal Applications:

• High-temperature tropical regions
• National highways, expressways
• Heavy truck-load routes

Bitumen VG-70: Overview

VG-70 is an even higher-grade binder designed for ultra-heavy loads and intense temperature zones, such as desert roads or airports.

Key Properties:

• Viscosity @ 60°C: 5600–8000 poise
• Kinematic Viscosity @ 135°C: Min. 300 cSt
• Flash Point: Min. 220°C
• Ductility @ 25°C: Min. 20 cm
• Softening Point: Min. 55°C
• Penetration: 30–50 dmm

Ideal Applications:

• Extreme climates (hot, dry)
• Heavy-duty roads, container ports, airports
• Urban industrial traffic zones

VG-60 vs VG-70: Comparison Table

How to Choose: VG-60 or VG-70?

When selecting between the two:

✅ Choose VG-60 if:

• You’re paving standard highways or urban roads
• The region experiences moderate to high temperatures
• Heavy vehicles are present but not extreme loads

✅ Choose VG-70 if:

• Your project is in very hot climates or industrial zones
• The road will support very high axle loads
• You’re constructing airfields, ports, or container terminals

Westinol: Reliable VG Bitumen Exporter

As a global supplier, Westinol provides VG-60 and VG-70 grades in:

• Bulk tankers
• New steel drums
• Jumbo bags
• Custom-labeled containers

All shipments include international inspection certificates, meet ASTM and IS standards, and are prepared for rapid delivery to Asia, Africa, and the Middle East.

Top 10 FAQs – Bitumen VG-60 vs VG-70

1. What does VG mean in bitumen?
VG stands for Viscosity Grade, defining the binder by its flow resistance at set temperatures.

2. Is VG-70 better than VG-60?
It’s stronger and more heat-resistant, but also more expensive—ideal only where conditions require it.

3. Can VG-60 be used in urban roads?
Yes, it’s excellent for national highways and city expressways.

4. Which is more rut-resistant: VG-60 or VG-70?
VG-70 has higher stiffness, offering better rutting resistance in hot, heavy traffic.

5. Do VG-60 and VG-70 comply with IS standards?
Yes, both comply with IS 73:2013 and international specifications.

6. What is the softening point of VG-70?
Minimum 55°C, making it ideal for desert environments.

7. Does VG-70 cost more than VG-60?
Yes, due to its higher refining level and performance.

8. Are both grades used in airports?
VG-70 is more suited to runways and cargo terminals.

9. How is bitumen exported?
Westinol ships via drums, flexitanks, and bulk vessels.

10. Where can I get VG-60 or VG-70?
Visit our Bitumen Product Page for technical specs and global supply options.