<p><p><strong>Reference(s):</strong></p><p><em>Newman and White (2008)</em></p><p><strong>Method Summary</strong></p><p>The roller compactor employs an on-board computer to control compaction criteria and to record machine speed and coverage through GIS and GPS systems. The data are displayed on the cab as well as transmitted to a central computer for further analysis (Newman and White 2008).</p><p>The acquired data for all roller passes include: (1) machine speed, (2) coverage, and (3) Compaction Meter Value (CMV). By controlling the roller passes, the degree of compaction can be controlled (Newman and White 2008).</p><p>Depending on the mix design, the CMV termination is set. For example a CMV value of 30 was used in a helipad construction. The roller is continuously operated till achieving the minimum CMV value, which ensures proper compaction (Newman and White 2008).</p><p><strong> </strong><strong>Accuracy and Precision</strong></p><p>This method is highly accurate and precise procedure<em>.</em></p><p><strong><em> </em></strong><strong>Adequacy of Coverage</strong></p><p>The operator monitors the number of roller passes on each section and ensures that the minimum CMV is achieved.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>Very specialized equipment is required. <em> </em></p></p>