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Penetration Bitumen 15/25


In the world of construction and infrastructure, the role of penetration bitumen cannot be overstated. As a crucial component of asphalt mixtures used in road paving and waterproofing applications, penetration bitumen grade 15/25 holds a significant place.

Properties of Penetration Bitumen Grade 15/25

Penetration bitumen grade 15/25, also referred to as paving grade bitumen, is characterized by its consistency and penetration depth. The numbers "15" and "25" correspond to the penetration value in tenths of a millimeter that a standard needle would penetrate the bitumen under specific conditions. This measurement gives insights into the hardness and stiffness of the bitumen.

  • Penetration Value: With a penetration value of 15/25, this grade of bitumen strikes a balance between hardness and flexibility. It means that the bitumen offers moderate resistance to deformation while maintaining a certain degree of flexibility, making it ideal for various applications.
  • Softening Point: Penetration bitumen grade 15/25 typically has a softening point in the range of 35 to 45°C. This characteristic ensures that the bitumen retains its properties under varying temperature conditions, which is vital for the durability of road surfaces.
  • Viscosity: The viscosity of this bitumen grade is relatively higher compared to other grades, contributing to its stability during paving operations. This aspect aids in achieving a consistent asphalt mixture that can withstand traffic loads and environmental factors.
Benefits of Using Penetration Bitumen Grade 15/25
  • Versatility: The balanced properties of this bitumen grade make it versatile for various applications, offering excellent performance in different scenarios.
  • Durability: The inherent hardness and flexibility of this bitumen grade contribute to the longevity of paved surfaces and structures.
  • Cost-Effectiveness: Its moderate penetration value makes it a cost-effective choice, striking a balance between performance and affordability.
  • Ease of Application: The viscosity of penetration bitumen grade 15/25 ensures smooth and consistent application during construction, reducing the chances of defects.
Item Specification Test method
Specific gravity @ 25/25 °C 1.01/1.06 D-70
Penetration @ 25 °C 25/15 D-5
Softening point °C 60/76 D-36
Ductility @ 25 °C 100 min D-113
Loss on heating (wt) % 0.2 Max D-6
Drop in penetration after heating % 20 Max D-6 D-5
Flash point °C 250 min D-92
Solubility in CS2 (wt) % 99.5 Max D-4
Spot test Negative A.A.S.H.O. T102
15/25 common packings:
One of the most common packaging of bitumen is new steel drum. The new steel drums are easy to handle, transport and a proper packaging to ensure the products reach their target destinations flawlessly without any leakage or spill. Read more