| Title |
Evaluating Unsaturated Hydraulic Properties of Compacted Geomaterials in Road Foundations (Ⅰ) : Laboratory Test |
| Keywords |
Soil-water characteristic curve;suction;hysteresis;permeability;compacted road foundations;함수특성곡선;흡수력;이력현상;투수계수;다져진 도로기초 |
| Abstract |
Generally, an unsaturated condition was not considered to predict the long-term strength and drainage behaviors on compacted road foundations. However, it is logical way to consider the unsaturated condition and hysteresis behavior on road foundations like subbase and subgrade. For more quantitative analysis, rational experimental approach requires proper laboratory tool and material model, and hydraulic properties of pavement geomaterials under unsaturated conditions. In this study, therefore, laboratory data from the soil-water characteristic curve tests were used to predict suction and unsaturated permeability on pavement foundations and the results were analyzed based on the nonlinear fitting model considered. In addition to that, the unsaturated moisture capacity of each material is discussed. |