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Submitted by admin on Wed, 05/30/2018 - 19:33

<p><p><strong>References:<br></strong><em>White et al. (2007a, 2009a, 2009b)</em></p><p><strong>Method Summary</strong></p><p>Proof rolling is also referred to as heavy test rolling and is a widely used QA technique on earthwork construction projects by many state highway agencies. It is typically performed using a pneumatic wheel roller on a compacted surface and the ruts observed beneath the wheels are measured to assess the support conditions. It has the advantage of providing a continuous visual record; however, it can be difficult and expensive to setup and operate. A few studies (White et al. 2007a, 2009a) showed correlations between rut depths and CCC measurements, which showed encouraging results.</p><p><strong>Accuracy and Precision</strong></p><p>The accuracy and precision of this test method is hard to quantify and is dependent on the experience of the field inspector measuring the rut depths.</p><p><strong>Adequacy of Coverage</strong></p><p>This method provides near continuous coverage of support conditions.</p><p><em> </em><strong>Implementation Requirements </strong></p><p>This method is easy to implement but can be difficult and expensive to setup.</p><p><em> </em><strong>General Comments </strong></p><p>This test method can serve as a good QA tool.</p></p>

Title
Proof Rolling