Data Collection and Performance Monitoring of an Instrumented ...
Data Collection and Performance Monitoring of an Instrumented ...
Data Collection and Performance Monitoring of an Instrumented ...
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P3 2009 Pavement <strong>Perform<strong>an</strong>ce</strong> Prediction Symposium: July 15-17, 2009, Laramie, Wyoming<br />
Shift Factors<br />
• Attributes the difference between laboratory<br />
<strong><strong>an</strong>d</strong> field peform<strong>an</strong>ce<br />
– (e.g., field fatigue life > lab fatigue life)<br />
• Several reasons<br />
– Difference in state <strong>of</strong> stress, traffic w<strong><strong>an</strong>d</strong>er,<br />
material difference between field <strong><strong>an</strong>d</strong> lab, HMA<br />
healing due to rest period<br />
Shift Factors