<p><p><strong>Reference(s):</strong></p><p><em>Benson and Khire (1994)<br>Cieselski and Collins (1993)<br>Hicks et al. (1995)<br>Sullivan (1996)<br>Swearingen et al. (1992)<br>Zhang and Tao (2006)</em></p><p><strong>Method Summary</strong></p><p>Strips of High Density Polyethylene (HDPE) are mixed with portage sand and tested to determine the secant modulus, resilient modulus, and shear strength. Strips were prepared at aspect ratios of 4, 8, and 12 to examine how reinforcement is affected by the length of the strips. The tests shows that reinforcing sand with reclaimed HDPE strips enhances its resistance to deformation and increases its strength. Addition of strips increased the CBR and the secant modulus, with the CBR increasing by as much as a factor of 5.</p><p>The secant modulus (k_S) is obtained from the CBR method (described above) by dividing σ_2.5 by 0.0025 m.</p><p><strong>Accuracy and Precision</strong></p><p>All tests showed that changes in properties of the sand caused by reinforcement were sensitive to the aspect ratio of the strips provided the strip content remained unchanged.</p><p><strong>Adequacy of Coverage</strong></p><p>The QC/QA methods can be implemented using a reasonable number of tests.</p><p><strong>Implementation Requirements </strong></p><p>Implementation requirements (cost, personnel, training, equipment, and time) for the QC/QA method are not excessive.</p><p><strong>General Comments</strong></p><p>The results of this study suggest that strips cut from reclaimed HDPE may prove useful as soil reinforcement in highway and light-duty geotechnical applications.</p></p>