Before the July “Compaction Action” issue of The Asphalt Pro hits your inbox later this week, let’s apply some quality control to a sometimes-overlooked area of pavement preservation. During a full-depth reclamation (FDR) treatment, you’ll add crushed aggregate prior to the procedure of reclaiming and remixing in-place. You must compact that layer properly.
We’ll oversimplify this to make it a quick tip: Additives work as stabilizing agents and play a role in the reclaiming and remixing stage of FDR. Those agents set up. They bond things together. This offers the reclaimed layer as a base for an overlay.
To get proper compaction of that base layer, you’ve got to get your compaction train mobilized efficiently. You want to achieve final compaction of the reclaimed layer within two hours of reclamation (that’s an average; it depends on ambient temperatures) to achieve manipulation of the elements. You want the rollers on the base layer before the stabilizing agents set up and refuse to allow further manipulation.
With your base layer’s optimum compaction achieved, you’re ready to overlay and give the taxpayers a long-lasting asphalt roadway.
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