The Changing Face of Compaction

This article describes how equipment manufacturers are updating compacting equipment to meet new demands. These new compactors vary amplitude with vibration according to the type of asphalt and aggregate being placed to avoid overcompaction. Rolling machines are also being developed that sense the degree of compaction between the drum and vary compactive force accordingly. There are currently four different compaction systems available for asphalt: static compaction, traditional circular vibration, directed vibration, and oscillation. All of these systems (except static compaction) have been tested by several institutes/contractors. Traditional circular vibration is the most versatile compaction system, while directed vibration machines measure the stiffness of the ground and have automatic setting of the angle of direction. Oscillating machines often work faster than conventional vibration, especially for achieving high densities with a minimum number of passes.


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  • Accession Number: 01001910
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 12 2005 11:05AM