<p><p><strong>Reference(s):</strong></p><p><em>Tingle et al. (2002)<br>Newman and White (2008)<br>Grogan (1994)</em></p><p><strong>Method Summary</strong></p><p>This method tests the improvement resulting from fiber reinforcement and chemical stabilization using a penetration test. The method can be adapted for a CPT or a DCP, but is better suited to a DCP test. An in-situ penetration tests can serve as either quality control or quality assurance. Quality control testing during treatment often involves in-situ penetration tests, which may form part of the final quality assurance testing regime.</p><p>Post-curing tests, such as CPT and/or DCP tests, are performed and compared to the pre-curing test results. These pre and post curing results indicate the increased strength of the material and are expressed in CBR values (Tingle et al. 2002 and Newman and White 2008).</p><p><strong> </strong><strong>Accuracy and Precision</strong></p><p>This method is accurate and precise for comparing penetration resistance values at specified depths.</p><p><strong> </strong><strong>Adequacy of Coverage</strong></p><p>Sufficient evaluation coverage requires many penetration tests. There is no recommendation available in the literature for adequacy of coverage. Adequacy of coverage will be proportional to the number of tests completed.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>The DCP test requires some experience and equipment and is easy to perform. A CPT test will be more expensive and take more experience to implement.</p></p>