Controlled test sections were constructed using a prototype CP-533 vibratory padfoot roller to evaluate relationships between machine drive power and measures of soil compaction. Machine power determined from internal sensors and number of roller passes was logged nearly continuously during construction of the test sections using an onboard computer and GPS mapping system. In this paper, machine power results are compared to spot measurements of nuclear density gauge moisture/density and dynamic cone penetration (DCP) index measurements. A framework for statistically analyzing power-based compaction monitoring data is presented with broader implications for other intelligent compaction and continuous compaction control systems that generate near continuous spatial data.
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