<p><p><strong>Reference(s):</strong></p><p><em>Kim et al. (2005)</em></p><p><strong>Method Summary</strong></p><p>The study was conducted to quantify and evaluate the structural contribution of reinforced granular working platforms used for constructing highway pavements over soft subgrade using Large-Scale Model Tests (LSME). The effect of geosynthetics was expressed in terms of the reinforcement factor. A two-layer profile consisting of simulated soft-subgrade and a working platform was used in the laboratory analysis and the KENLAYER program was used to back-calculate the elastic modulus of geosynthetic-reinforced layers. Deflections and stresses at various locations of working platforms were measured using Position transducers and earth pressure cells respectively. Displacements and strains in the geosynthetics were measured using Linear Variable Differential Transformers (LVDT) and resistance type strain gauges respectively.</p><p><strong> </strong><strong>Accuracy and Precision</strong></p><p>This method provides an approximate assessment of construction quality for this technology.</p><p><strong> </strong><strong>Adequacy of Coverage</strong></p><p>The method can be implemented to provide an adequate assessment of the geosynthetics and entire quantity of improved soil, using a reasonable number of tests.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>Implementation requirements are not excessive.</p><p><strong> </strong><strong>General Comments</strong></p><p>Laboratory testing is highly applicable to performance related specifications and somewhat applicable to method approach specifications. Uses of woven geotextile, geogrid or geogrid-geotextile combinations having the specified properties can stabilize the pavement foundation. Geocomposite drainage is used for subgrade stabilization. Working platforms reinforced with geosynthetics have smaller elastic deformation. Geosynthetic can be included as reinforcement to reduce required settlement and thickness of pavement section. Geosynthetic can increase structural number, layer coefficient, and elastic modulus of the pavement and enhance pavement service life.<strong> </strong></p></p>