Penetration Grade Bitumen
Penetration Bitumen 60/70
A widely specified paving-grade bitumen with a balanced consistency for hot-mix asphalt, base and wearing courses, and general road construction.
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Penetration Grade Bitumen
Penetration Bitumen 80/100
A comparatively soft penetration-grade paving bitumen used where greater flexibility and lower binder stiffness are required by the pavement specification.
- Grade
- 80/100
- Specification Basis
- Commercial 80/100 penetration grade using SANS 307-style requirements and ASTM test methods; current ASTM D946/D946M lists 85–100 rather than exact 80–100
- Product Group
- Penetration Grade Bitumen
Technical Product Data
Product Information
Penetration Bitumen 80/100 is a widely traded commercial paving grade defined by a needle penetration range of 80–100 dmm at 25°C. It is softer than 60/70 and 40/50, which can provide improved flexibility and workability in pavement systems designed for a softer binder.
Standards note: the current ASTM D946/D946M penetration-grade list includes 85–100 rather than an exact 80–100 grade. For this reason, this product page treats 80/100 as a commercial contract grade and uses recognized ASTM test methods for the individual properties. The buyer’s specification and batch COA must define the final acceptance limits.
Applications
- Hot-mix asphalt where a softer penetration binder is specified
- Flexible pavement layers in cooler service conditions
- Asphalt mixtures requiring improved workability at the selected plant temperatures
- General road construction subject to local authority specification
URMEX penetration-grade range: 40/50, 60/70 and 80/100. 80/100 is the softest grade in this current range.
| Property | Test Method | Unit | Requirement | Note |
|---|---|---|---|---|
| Penetration at 25°C, 100 g, 5 s | ASTM D5 | dmm | 80–100 | Commercial grade-defining range |
| Softening Point (Ring & Ball) | ASTM D36 | °C | 42–51 | SANS 307-type 80/100 range |
| Rotational Viscosity at 60°C | ASTM D4402 | Pa·s | 75–150 | SANS 307-type 80/100 range |
| Rotational Viscosity at 135°C | ASTM D4402 | Pa·s | 0.15–0.40 | SANS 307-type 80/100 range |
| Spot Test, xylene | AASHTO T102 | % xylene | Max. 30 | Where required by the buyer specification |
| Mass Change after RTFOT | ASTM D2872 | % mass | Max. 0.5 | Aged-binder requirement |
| Viscosity at 60°C after RTFOT | ASTM D4402 | % of original | Max. 300 | Aged-binder requirement |
| Softening Point after RTFOT | ASTM D36 | °C | Min. 44 | Aged-binder requirement |
| Increase in Softening Point after RTFOT | ASTM D36 | °C | Max. 9 | Aged-binder requirement |
| Retained Penetration after RTFOT | ASTM D5 | % of original | Min. 50 | Aged-binder requirement |
Specification limits are editable and should be aligned with the buyer’s purchase specification and the shipment Certificate of Analysis.
Because 80/100 is not an exact grade in the current ASTM D946/D946M list, this page does not label 80/100 as ASTM D946-compliant. The table uses a coherent 80/100 penetration-grade framework published for SANS 307-type practice, with ASTM methods for penetration, softening point, rotational viscosity and RTFOT aging. The sales contract must identify the buyer’s governing national or project specification.
Packaging & Supply
Typical export formats include heated bulk, steel drums and jumbo bags. Final packing, net weight and loading configuration should be confirmed before production.
Handling & Storage
Use appropriate hot-bitumen storage and transfer equipment. Keep water away from hot product, control heating carefully and use suitable thermal PPE.
Buyer Questions
Frequently Asked Questions
What does Bitumen 80/100 mean?
It means the commercial grade is specified to have a needle penetration of 80–100 dmm at 25°C under the stated penetration test conditions.
Is 80/100 listed in current ASTM D946/D946M?
Current ASTM D946/D946M lists 85–100, not an exact 80–100 grade. Buyers should therefore state the national or project specification that governs an 80/100 order.
Is 80/100 softer than 60/70?
Yes. Its higher penetration range indicates a softer binder at the penetration test temperature.
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