Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay Liners
The aim of this paper is to investigate the effect of pore-water salinity on the electrical resistivity (ER) of different compacted clay liners (CCLs) in terms of its mineralogical composition. For this purpose, an experimental programme was conducted where ERs of different kaolin-dominant CCL speci...
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7974152 |
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| author | Yi Lu Hossam Abuel-Naga Qais Al Rashid Md Farhad Hasan |
| author_facet | Yi Lu Hossam Abuel-Naga Qais Al Rashid Md Farhad Hasan |
| author_sort | Yi Lu |
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| description | The aim of this paper is to investigate the effect of pore-water salinity on the electrical resistivity (ER) of different compacted clay liners (CCLs) in terms of its mineralogical composition. For this purpose, an experimental programme was conducted where ERs of different kaolin-dominant CCL specimens, reconstituted using water having different concentrations of NaCl (0 M, 0.5 M, and 1.0 M), were measured. The kaolin-dominant CCL specimens tested in this study include pure kaolin, three different kaolin-bentonite mixtures, and three different kaolin-sand mixtures. The experimental results show that the ERs of CCL specimens decrease as the salt concentrations in pore water, moisture content, and dry density increase. At constant density and moisture content, the test results also indicate that increasing the sand content in kaolin-dominant CCL specimens increases its ER regardless of the water salinity level. This behaviour could be attributed to the lower surface conduction of sand compared to kaolin. However, at constant density and moisture content, increasing the bentonite content in kaolin-dominant CCL specimens decreases its ER in the distilled water environment as surface conduction of bentonite is higher compared to that of kaolin. On the contrary, in saltwater environments, ER increases as the bentonite content increases. This behaviour could be explained in terms of the expected aggregated microstructure of bentonite in the saltwater environment that could reduce the number and area of interparticle contacts, and consequently, increase the ER of CCL specimens. |
| format | Article |
| id | doaj-art-89e0d8306c124e36a78f79d315c4c598 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
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| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-89e0d8306c124e36a78f79d315c4c5982025-02-03T06:07:15ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/79741527974152Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay LinersYi Lu0Hossam Abuel-Naga1Qais Al Rashid2Md Farhad Hasan3School of Civil Engineering, Guangzhou University, Guangzhou, ChinaDepartment of Civil Engineering, La Trobe University, Melbourne, Victoria, AustraliaDepartment of Civil Engineering, La Trobe University, Melbourne, Victoria, AustraliaDepartment of Civil Engineering, La Trobe University, Melbourne, Victoria, AustraliaThe aim of this paper is to investigate the effect of pore-water salinity on the electrical resistivity (ER) of different compacted clay liners (CCLs) in terms of its mineralogical composition. For this purpose, an experimental programme was conducted where ERs of different kaolin-dominant CCL specimens, reconstituted using water having different concentrations of NaCl (0 M, 0.5 M, and 1.0 M), were measured. The kaolin-dominant CCL specimens tested in this study include pure kaolin, three different kaolin-bentonite mixtures, and three different kaolin-sand mixtures. The experimental results show that the ERs of CCL specimens decrease as the salt concentrations in pore water, moisture content, and dry density increase. At constant density and moisture content, the test results also indicate that increasing the sand content in kaolin-dominant CCL specimens increases its ER regardless of the water salinity level. This behaviour could be attributed to the lower surface conduction of sand compared to kaolin. However, at constant density and moisture content, increasing the bentonite content in kaolin-dominant CCL specimens decreases its ER in the distilled water environment as surface conduction of bentonite is higher compared to that of kaolin. On the contrary, in saltwater environments, ER increases as the bentonite content increases. This behaviour could be explained in terms of the expected aggregated microstructure of bentonite in the saltwater environment that could reduce the number and area of interparticle contacts, and consequently, increase the ER of CCL specimens.http://dx.doi.org/10.1155/2019/7974152 |
| spellingShingle | Yi Lu Hossam Abuel-Naga Qais Al Rashid Md Farhad Hasan Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay Liners Advances in Materials Science and Engineering |
| title | Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay Liners |
| title_full | Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay Liners |
| title_fullStr | Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay Liners |
| title_full_unstemmed | Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay Liners |
| title_short | Effect of Pore-Water Salinity on the Electrical Resistivity of Partially Saturated Compacted Clay Liners |
| title_sort | effect of pore water salinity on the electrical resistivity of partially saturated compacted clay liners |
| url | http://dx.doi.org/10.1155/2019/7974152 |
| work_keys_str_mv | AT yilu effectofporewatersalinityontheelectricalresistivityofpartiallysaturatedcompactedclayliners AT hossamabuelnaga effectofporewatersalinityontheelectricalresistivityofpartiallysaturatedcompactedclayliners AT qaisalrashid effectofporewatersalinityontheelectricalresistivityofpartiallysaturatedcompactedclayliners AT mdfarhadhasan effectofporewatersalinityontheelectricalresistivityofpartiallysaturatedcompactedclayliners |