<p><p><strong>Reference(s):</strong></p><p><em>AEN ISO 13426-1:2003(E)<br>Pokharel (2010)<br>Thakur (2011)<br>Yang (2010)</em></p><p><strong>Method Summary</strong></p><p>EN ISO 13426-1:2003(E) describes the four index test methods (tensile shear test, peeling test, splitting test, local overstressing test) for measuring the junction strength of the geocells under different loading conditions considering all possible four failure mechanisms (i.e. shear, peeling, tensile stress, and local overstressing failure). Pokharel (2010) and Yang (2011) reported tensile test results on HDPE and Novel polymeric Alloy (NPA) geocells. Tensile strength and elastic modulus of different geocells were evaluated. Thakur (2010) conducted geocell-RAP interface shear tests in a large direct shear test box to determine interaction coefficient and interface efficiency on cohesion and friction angle.</p><p><strong> </strong><strong>Accuracy and Precision</strong></p><p>The accuracy and precision of the testing can be maintained by conducting repeated tests on the similar type of geocell. The method is accurate and precise.</p><p><strong>Adequacy of Coverage</strong></p><p>These tests can be performed on a selected number of samples and limited tests are typically done in practice.</p><p><strong>Implementation Requirements </strong></p><p>Implementation requirements (cost, personnel, training, equipment, and time) are not excessive.</p><p><strong>General Comments</strong></p><p>The method is applicable to a method approach specification, and not applicable to performance approach specifications.</p></p>