Understanding Asphalt Density
Everything you need to know about calculating asphalt for your project.
What Is Asphalt Density?
Asphalt density is a measure of how tightly packed the materials are, usually measured in kilograms per cubic meter (kg/m³) or pounds per cubic foot (lb/ft³). It’s a critical factor for project success.
Why Is Density Important?
- Save Money: Use just the right amount of asphalt—no waste, no shortages.
- Durability: Properly compacted asphalt lasts longer and performs better.
- High Quality: Meet professional standards for structural strength.
Common Asphalt Densities
| Type | Density (kg/m³) | Density (lb/ft³) |
|---|---|---|
| Dense-Graded Asphalt | 2,400–2,500 | 150–156 |
| Porous Asphalt | 2,000–2,200 | 125–137 |
| Recycled Asphalt (RAP) | Varies | Varies |
Quick Tips
- Use the right tools like rollers and compactors for proper density.
- Test density during paving to avoid costly rework.
- Plan for weather—cold weather can make compaction harder.