Characterization of Eagle Ford Shale by Using Laboratory Electrical Resistivity Imaging: Fid-Bau Portal

Characterization of Eagle Ford Shale by Using Laboratory Electrical Resistivity Imaging

Akhtar, Md. Asif / Mahjabin, Sabrina / Hossain, Md. Sahadat / Mina, Zamanian / Hossain, Md. Ishtiaque

Available conventional test methodologies to estimate the suitability of compacted soil in various engineering developments are time-consuming, expensive, and destructive. This research aims to assess the practical applicability of electrical resistivity to evaluate compacted soils. To achieve this goal, eagle ford shale samples were collected from the newly constructed bottom liner of the City of Irving landfill, Texas. Using supersting IP resistivity equipment, the electrical resistivity of compacted samples with different void ratios and molding water contents were measured in the laboratory. This study investigated the relationships between the soil resistivity of compacted clay and moisture content, unit weight, and degree of saturation. Experiments also demonstrated that the electrical resistance of the compacted clay correlates with compaction effort. In standard proctor test, the resistivity value at maximum dry density (MDD) decreased 18.03% compared to reduced proctor test, whereas it decreased 6.56% in modified proctor test. Changes in electrical resistivity with the compressive strength were also observed. Soil samples prepared with moisture contents of 17.3%, 21.4%, 25.7%, and 29.3%, resistivity value decreased by 65.5%, 56.5%, 44.8%, and 38.5% of the initial value at failure, respectively. The process of using an electrical resistivity imaging technique to obtain information about the geotechnical parameters of compacted clay enables a means of predicting those parameters more effectively.