<p><p><strong>References:<br></strong><em>Ureteck (2005)</em></p><p><strong>Method Summary</strong></p><p>Coring is conducted to check the presence of polyurethane. Core holes should be immediately repaired after the cores have been extracted.</p><p><strong>Accuracy and Precision</strong></p><p>Cores can be taken thorough the pavement structure after the polyurethane injection for visual inspection of the core and subgrade.</p><p><strong>Adequacy of Coverage</strong></p><p>A core sample can be only used to represent subsurface condition for the certain point rather than the entire injected area. The numbers of core samples taken may be dependent on the area of project.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>Coring requires some experience and drilling equipment.</p><p><strong>General Comments</strong></p><p>Inspection of cores can verify if polyurethane has adequately penetrated and consolidated the problematic area.</p></p>