Want Optimum Density? Get Smart. Intelligent Compaction (IC) Comes from Both Intelligent Machines and Intelligent Operators

This article describes how new technologies and high-performance compaction equipment are making it easier for roadbuilders to attain optimum density for road bases and asphalt mats without damaging what’s below. For both soil and asphalt rollers, today’s “intelligent compaction” (IC) uses machines that sense the degree of compaction beneath the drum, and vary compactive force to get density. Now, this capability is combined with global positioning system (GPS) technology to create a real-time database of densities obtained anywhere on a pass, with the ability to log the number of passes and the temperature of the mat, anywhere on that mat, on any pass. Intelligent rollers have the ability to make and execute an appropriate decision based on the analysis of collected information. They measure material stiffness data during compaction, analyze that information, and make a decision how to adjust the vibratory drum to optimize compaction. Conversely, conventional compaction has limitations. It provides little or no feedback on the fly. Corings for density measurement are not analyzed until after compaction, and may not be representative of the entire section. Overcompaction can occur. In the short term, intelligent compaction can improve density for better performance, improve construction efficiency for cost savings, and increase construction information for better quality control and quality assurance.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos;
  • Pagination: pp 20-32
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01147342
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 28 2009 12:59PM