PMB 45/80 Polymer Modified Bitumen Supplier and Exporter

PMB 45/80 is a versatile polymer-modified bitumen grade in the Tiger Bitumen range of Polymer Modified Bitumen. Its penetration range is 45 to 80 tenths of a millimetre (0.1 mm) at 25 °C. Compared with harder grades such as PMB 25/55, it offers greater flexibility while retaining useful resistance to permanent deformation. Therefore, engineers may specify it for asphalt wearing courses, including dense asphalt concrete, stone mastic asphalt and porous asphalt, when the project requirements support its use.

Key Characteristics and Benefits

• Balanced penetration range: The 45–80 (0.1 mm at 25 °C) range provides more flexibility than harder grades while maintaining performance at elevated service temperatures, subject to the complete binder specification.
• Resistance to rutting and cracking: Polymer modification can improve elastic behaviour and high-temperature performance. The resulting pavement can better resist permanent deformation and cracking when the binder suits the mix design.
• Elasticity and fatigue performance: Suitable polymer systems can improve elastic recovery and binder cohesion. These properties help asphalt withstand repeated traffic loading.
• Suitable for wearing courses: Engineers commonly consider this grade for surface layers, including gap-graded, thin-layer and porous asphalt mixtures.
• Controlled working temperatures: Mixing and compaction temperatures depend on the product formulation. Always follow the supplier’s technical data sheet and approved mix design.

Applications

• Asphalt concrete wearing and binder courses on roads carrying medium to heavy traffic
• Stone mastic asphalt (SMA) surface courses
• Porous asphalt and thin or very thin asphalt layers
• Gap-graded and other high-performance surface mixtures
• Anti-cracking and reinforcement layers where the approved design requires improved elasticity or fatigue performance
• Road pavements exposed to seasonal temperature variations

Choosing the Right Grade for Your Project

This grade can suit wearing courses that need a balance of rutting resistance and flexibility across a range of service temperatures. However, the correct choice depends on traffic loading, climate, pavement structure and the approved asphalt mix design.

For applications that prioritise stiffness in base or binder layers, PMB 25/55 may be worth evaluating. Conversely, a softer grade such as PMB 75/130 may be considered when the project calls for a softer penetration range. Include your project specification in your enquiry so our team can confirm whether the required grade meets your needs.

Technical Specifications and EN 14023

EN 14023 provides a framework for classifying polymer-modified bitumen used in roads, airfields and other paved areas. The 45/80 designation identifies the penetration range at 25 °C, measured according to EN 1426.

The complete designation also includes a softening-point class measured using EN 1427. Examples include PMB 45/80-60 and PMB 45/80-65. The suffix identifies the relevant minimum softening-point class; it does not describe every performance property of the binder.

Other properties, including cohesion, resistance to hardening, Fraass breaking point, elastic recovery and storage stability, depend on the selected specification and declared product properties. Confirm the full designation and test values against the technical data sheet for the actual supply.