Influence of Compaction on Electrical Resistivity Characteristics of Fine-grained Soil East of Baghdad City, Iraq
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Published:2023-08-16
Issue:2
Volume:27
Page:169-182
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ISSN:2339-3459
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Container-title:Earth Sciences Research Journal
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language:
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Short-container-title:Earth sci. res. j.
Abstract
In geotechnical practice, there is a continuous demand for an efficient method for measuring the soil moisture content and dry unit weight of compacted soils used in a wide range of earthwork constructions. The Electrical Resistivity method has increasingly been used for rapid and non-invasive assessment of some geotechnical properties. This study aims to evaluate the influence of Moisture Content (MC), Dry Unit Weight (DUW), and Compaction Energy (E) on the Electrical Resistivity (ER) of soil collected from the east of Baghdad City, Iraq. To achieve this goal, soil specimens were compacted to various MC and DUW found in geotechnical practice using different E levels. The ER of prepared specimens was measured using the two electrodes method and compared with various geotechnical parameters related to the compaction process. The results showed that the employed MC, DUW, and E levels influenced the ER. The higher the MC, DUW, and E, the lower the ER. However, the ER was more sensitive to these variables for specimens compacted dry of the optimum. Furthermore, the ER was correlated very well with Volumetric Moisture Content ϴ and Degree of Saturation Sr of soil, with a high correlation coefficient (R2 >94%) and very low p-values, which indicated that these correlations were statistically significant. The current findings indicate the usefulness of the ER method for predicting these parameters. Therefore, using the ER method as a rapid and cost-effective technique for the preliminary evaluation of soil compaction variables in earthwork constructions is recommended. However, the current laboratory findings must be confirmed on different soil types.
Publisher
Universidad Nacional de Colombia
Subject
General Earth and Planetary Sciences
Reference42 articles.
1. Abu-Hassanein, Z. S., Benson, C. H., & Blotz, L. R. (1996). Electrical resistivity of compacted clays. Journal of Geotechnical Engineering, 122(5), 397-406, https://doi.org/10.1061/(ASCE)0733-9410(1996)122:5(397) 2. Akhtar, MD. A. (2021). Evaluation of geotechnical parameters of soil using electrical resistivity imaging. [Ph.D. thesis, Faculty of the Graduate School, The University of Texas.] Arlington, Texas, USA. http://hdl.handle.net/10106/30228 3. Al Farajat, M., Schaefers, B., Al Hassanat, H., Al Atteyat, N., Al Jahed, N., & Khataibeh, J. (2015). Using GIS and Geophysics in Selecting Suitable Basins with Freshwater Aquifers for an Efficient Exploration Strategy-A Case Study from Petra-Region, Jordan. Earth Sciences Research Journal, 19(1), 39-50. https://doi.org/10.15446/esrj.v19n1.48357 4. Alshakarchi, Y. J., & Turkie, M. A. (2011). The geotechnical maps for the soil of the governorates Baghdad, Diyala, Wasit, and Babylon. Journal of Engineering, 17(3), 87-104. 5. Al-Shammary, A. A. G., Kouzani, A. Z., Kaynak, A., Khoo, S. Y., Norton, M., & Gates, W. (2018). Soil Bulk Density Estimation Methods: A Review. Pedosphere, 28(4), 581-596, https://doi.org/10.1016/S1002-0160(18)60034-7
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