[VIDEO] 5 Factors Affecting Successful Asphalt Compaction

When compacting asphalt, there are five factors that affect finished density of the asphalt mat

August 12, 2019

When compacting asphalt, there are five factors that affect finished density of the asphalt mat: temperature of the mix, mat thickness, base temperature, environmental conditions (air temperature) and wind.

Additional resources:

How to Compact Asphalt Pavements

How to Achieve Optimum Compaction

How to Manage Asphalt Density

How to Overcome Common Compaction Quality Challenges

Top 5 Tips for Managing Density

Why Tracking Temperatures is Key to Successful Asphalt Paving

Is It Too Cold to Pave?


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Given that the best time to achieve the greatest density is when the mat is hottest, it makes sense to get as much compaction at the higher temperatures as possible. Scherocman says the best way to do that is to operate two rollers in echelon – side by side – down the mat. This enables the full width of the mat to be compacted while that mat is hottest.
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The key to compaction success after the mix has been placed is to roll the mat while it is still hot, so it's important the roller follow close behind the paver.
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