Highway Pavement Compaction Equipment

Compaction is one of the most critical processes associated with constructing a highway pavement that can provide good long-term performance. The densification of the various layer materials achieved through compaction gives them the strength and stiffness necessary to withstand heavy traffic loading and some of the damaging effects of the environment. The conventional rolling equipment and techniques for achieving the target levels of compaction have worked reasonably well over the years; however, they have not been without their difficulties. The typical problems associated include non-uniformity derived from variability in the materials (particularly in the natural soil), poor control of moisture content in the underlying layers, low or non-uniform temperatures in the hot-mix asphalt (HMA) or warm-mix asphalt (WMA) layer, poorly compacted longitudinal joints, and a lack of tools that provide feedback to the roller operator so that the roller pattern can be continuously achieved. 

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These problems have, in turn, resulted in lower productivity and higher costs during construction as well as reduced pavement performance, shorter pavement lives, and higher maintenance and rehabilitation costs.
Over the last 10 years, there have been several major innovations in technology for highway pavement construction that will greatly revolutionize pavement construction. One of these innovations, intelligent compaction, is intended to address some of the problems associated with conventional compaction methods.

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