Bitumen 50/70

Bitumen and Its Different Grades

What is Bitumen?

Bitumen is a viscous, black, and sticky petroleum-based material primarily used in road construction, waterproofing, and industrial applications. It is produced through the distillation of crude oil and is known for its waterproofing, adhesive, and durability properties.

Different Grades of Bitumen

Bitumen is classified based on its penetration value, viscosity, or performance under specific conditions. The most common types include:

  1. Penetration Grade Bitumen (Most Common for Roads)
    Classified by penetration value (hardness level) measured in 0.1 mm units.
    The lower the penetration number, the harder and more durable the bitumen.
    Common grades & uses:
    – Bitumen 40/50 → Heavy-duty roads, airport runways
    – Bitumen 60/70 → Highways, expressways (best for tropical climates)
    – Bitumen 80/100 → Provincial & city roads, waterproofing
  2. Viscosity Grade Bitumen (VG)
    Classified by viscosity at 60°C (better for temperature variations).
    Used in hotter climates and industrial applications.
    Common grades:
    – VG-10 → Low-traffic roads, spraying applications
    – VG-30 → Highways & urban roads (widely used in India & hot climates)
    – VG-40 → Heavy-duty pavements & industrial use
  3. Performance Grade (PG) Bitumen
    Designed to withstand specific temperature ranges.
    Used in regions with extreme temperature fluctuations.
    Example: PG 64-22 (can handle +64°C max and -22°C min temperatures).
  4. Oxidized (Blown) Bitumen
    Produced by blowing air into hot bitumen, making it harder & more resistant to aging.
    Used for roofing, waterproofing, and industrial coatings.
    Grades: Ranging from Bitumen 85/25 to 115/15.
  5. Cutback Bitumen
    Bitumen mixed with solvents (kerosene, diesel) for cold weather applications.
    Used for road repair & spray sealing.
  6. Emulsified Bitumen
    Bitumen mixed with water & emulsifiers for cold applications.
    Used in pothole repairs, surface treatments, and rural roads.

Choosing the Right Bitumen Grade

  • Highways & heavy traffic roads → 60/70 or VG-30
  • Urban roads & general paving → 80/100 or VG-10
  • Roofing & waterproofing → Oxidized bitumen
  • Cold weather construction → Cutback or Emulsified bitumen

Bitumen Supplier Guinea Bissau

Which grade of bitumen is most commonly used in Guinea Bissau

In Guinea-Bissau, the most commonly used bitumen grade for road construction is Penetration Grade 60/70. This grade is widely favored across West Africa due to its balanced properties, offering both durability and flexibility, making it suitable for the region’s tropical climate and varying traffic conditions. Its optimal performance in temperatures ranging from -22 °C to +76 °C makes it ideal for asphalt paving in moderate to hot climates .​
For areas experiencing higher temperatures or heavier traffic loads, Viscosity Grade VG-30 bitumen is also utilized. VG-30 provides enhanced resistance to deformation and rutting under high-temperature conditions, making it suitable for heavy-duty roads .​
Additionally, Performance Grade (PG) bitumen, such as PG 70-10, is employed in regions with extreme temperature variations. PG 70-10 is designed to withstand high pavement temperatures up to 70 °C, offering superior resistance to rutting and thermal cracking .​
In summary, while Penetration Grade 60/70 remains the predominant choice for road construction in Guinea-Bissau, the selection of bitumen grades may vary based on specific project requirements, climate conditions, and traffic demands.

Jumbo Bag and Drum Packaging for Bitumen Grades 60/70 and 80/100 for Guinea Bissau

Bitumen 60/70-80/100 in 1 MT Jumbo Bag with a steel cage and pallet: Loading 20 MT in 20 ft Container
Bitumen 60/70 in 1200 KG Jumbo Bag : Loading 24 MT in 40 ft Container
Bitumen 60/70 in 1300 Kg Jumbo Bag: Loading 26 MT in 40 ft Container
Bitumen 60/70 in 300 Kg BituBag: Loading 24 MT in 20 ft Container
Bitumen 60/70-80/100 in 180kg New Steel Drum: Loading 110 Drum in 20 ft = 20 Ton

Key Ports for Unloading Bitumen Supplier Guinea Bissau

  • Port of Bissau (Porto de Bissau) – Main Entry Point
    Location: Capital city, Bissau.
  • Transshipment via Neighboring Ports

Domestic and foreign Bitumen Supplier Guinea Bissau

There are no known bitumen producers in Guinea-Bissau, but some local distributors or construction companies handle bitumen for infrastructure and road development. These typically import bitumen

International Bitumen Supplier Guinea Bissau

International supplier of bitumen from Guinea Bissau By choosing Zumrut International Kimya, you benefit from lasting quality, professional service, and unparalleled expertise in bitumen supply. We are committed to sustainability, innovation, and customer satisfaction, continuously striving to deliver cutting-edge solutions in the bitumen industry.

🔹 Zumrut International Kimya  is fully prepared to supply and deliver various grades of bitumen on CIF and CFR terms to various Guinea Bissau ports, .🔹

Bitumen penetration grade specifications 60/70, 80/100, 40/50 for Guinea Bissau

Property Bitumen 40/50 Bitumen 60/70 Bitumen 80/100 Test Method
Penetration (25°C, 100g, 5s) (0.1 mm) 40 – 50 60 – 70 80 – 100 ASTM D5
Softening Point (°C) 50 – 58 48 – 56 45 – 52 ASTM D36
Ductility (25°C, cm) >100 >100 >100 ASTM D113
Specific Gravity @ 25°C 1.01 – 1.06 1.01 – 1.06 1.01 – 1.06 ASTM D70
Flash Point (°C, min) 250 230 225 ASTM D92
Loss on Heating (% max) 0.5 0.5 0.5 ASTM D6
Solubility in Trichloroethylene (% min) 99 99 99 ASTM D2042
Viscosity @ 135°C (cSt) 400 – 600 200 – 400 150 – 300 ASTM D2170
Spot Test Negative Negative Negative AASHTO T102