FIGURE 12 Moisture content spread for various geosynthetics their series of triaxial tests that the ability to lower the moisture content in unsaturated materials has highly beneficial implications regarding increasing the base course resilient modulus and reducing its permanent deformation due to the presence of excess moisture. This research project also showed that the zone of influence of the ELDG on the overlying base course is 8 to 10 inches (200 to 250 mm) during the short evaluation time of the project. This zone of influence is included in the quantification of the hydraulic benefit the ELDG brings to an overlying base course developed as part of this research. This project led to a method that incorporates the hydraulic benefits of the ELDG in the 1993 AASHTO Flexible Pavement Structural Design Method. Accomplishing this is a four-step process. (1) Incorporate mechanical stabilization within a pavement design. (2) For a predetermined time frame (five years, for example), determine the dates upon which rain events of sufficient intensity to saturate the overlying granular layer occur. (3) For the same time frame, determine the number of days with average temperatures below FILTER UNIT "The Original Rock Bag" Durable, Versatile, Effective Quick & Easy Installation 30-Year Track Record 1.1 Million Units Installed Jobsites in USA 100% Recycled Content Marubeni America Corp. www.kyowa-filterunit.com Mr. Yasutaka (Nishi) Nishimune 212-450-0320 | nishimune-y@marubeni.com www.GeosyntheticsMagazine.com 0620GS_p28-37.indd 35 35 5/21/20 11:50 AMhttp://www.kyowa-filterunit.com http://www.GeosyntheticsMagazine.com