Asphalt Compaction Calculator
Calculate the optimal number of roller passes, compaction time, and coverage rate for your asphalt paving project. Get customized recommendations based on your specific project parameters.
How to Use This Calculator
Enter Project Details
- Select asphalt type from the dropdown menu
- Enter asphalt thickness and temperature
- Input lane width and length
- Choose your desired compaction target
Enter Roller Details
- Input roller weight (typically 8-12 tons)
- Enter roller drum width (typically 4-7 feet)
- Specify roller operating speed (typically 2-3 mph)
View Results
- See recommended number of roller passes
- View estimated compaction time
- Check coverage rate and roller pattern length
Apply Recommendations
- Review compaction difficulty assessment
- Follow roller pattern recommendations
- Download results for your project records
Asphalt Compaction Guide
Understanding Asphalt Compaction
Proper compaction is critical for asphalt pavement performance. It increases density, reduces air voids, and improves resistance to deformation, moisture damage, and aging.
Temperature
Asphalt must be compacted above the cessation temp (175°F/80°C).
Lift Thickness
Thicker lifts retain heat longer but may require more passes.
Roller Type & Weight
Heavier rollers provide more compactive effort.
Timing
Compaction must be completed while the mix is still hot.
Recommended Roller Patterns
| Level | Passes | Pattern | Notes |
|---|---|---|---|
| Low (92-94%) | 3-5 | Simple linear | Temporary surfaces |
| Medium (94-96%) | 5-7 | Standard with 6" overlap | Most applications |
| High (96-98%) | 7-9 | Complex with direction changes | Heavy traffic areas |
| >98% | 9+ | Multi-directional, varied amps | Airports, highways |
Compaction Best Practices
- Temp Monitoring: Complete compaction before temp drops below 175°F (80°C) for hot mix.
- Roller Sequence: Use breakdown, intermediate, and finish rollers.
- Speed Control: Maintain consistent speed between 2-3 mph (3-5 km/h).
- Overlap: Maintain consistent overlap (6-12 inches) between passes.
- Vibration: Use high amplitude for thick lifts, low/static for thin lifts.
Frequently Asked Questions
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