Bitumen vs. Asphalt: Understanding the Difference
What is the difference between bitumen and asphalt? Compare composition, usage, and costs to ensure you are ordering the right paving material for your project.
Bitumen vs. Asphalt: Understanding the Difference
The terms "bitumen" and "asphalt" are often used interchangeably in the construction industry, but they are entirely different materials. If you are preparing to use our Bitumen Calculator, it is vital to know exactly what material you are actually measuring.
The Simple Definition
Bitumen is the liquid binder. It is the sticky, black, highly viscous hydrocarbon substance extracted from crude oil. Think of it as the "glue."
Asphalt (or asphalt concrete) is the final driving surface. It is a composite mixture created by blending roughly 95% crushed rock, sand, and gravel (aggregate) with 5% bitumen to bind it all together.
Side-by-Side Comparison
| Feature | Bitumen | Asphalt |
|---|---|---|
| Composition | 100% hydrocarbons | Aggregate + Bitumen Binder |
| Application | Sprayed as a seal coat or mixed at plant | Laid and compacted as a structural surface |
If you are trying to calculate the total tonnage of the mixed driving surface, you should use our Asphalt Calculator instead.
Bitumen Calculator & Quantity Estimator
Apply the concepts from this comparison using our free interactive calculator.
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