Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic Solvents
Clayey soils are the most common material used for water sealing and undertake an important role in controlling landfill-related pollution. Organic liquids can adversely affect the effectiveness of clay liners by drastically increasing their hydraulic conductivity. The aim of this study is to invest...
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| Format: | Article |
| Language: | English |
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University of Tehran Press
2018-06-01
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| Series: | Civil Engineering Infrastructures Journal |
| Subjects: | |
| Online Access: | https://ceij.ut.ac.ir/article_66130_172be9b6e612157482add14fb3122294.pdf |
| _version_ | 1811241734260129792 |
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| author | Mehran Karimpour-Fard Roghayeh Alimohammadi-jelodar |
| author_facet | Mehran Karimpour-Fard Roghayeh Alimohammadi-jelodar |
| author_sort | Mehran Karimpour-Fard |
| collection | DOAJ |
| description | Clayey soils are the most common material used for water sealing and undertake an important role in controlling landfill-related pollution. Organic liquids can adversely affect the effectiveness of clay liners by drastically increasing their hydraulic conductivity. The aim of this study is to investigate and compare the permeability in two types of clay with different plasticity, exposed to the flow of kerosene and diesel as non-polar immiscible liquids and ethanol as a miscible liquid with an intermediate dielectric constant. The effects of plasticity and water content for a given compactive effort are also investigated. Two different clayey soils with different plasticity were provided and their physical properties determined. Next, modified constant-head permeability tests were conducted on the samples. Results show that the lower dielectric constant of the organic fluids, leads to an increase in hydraulic conductivity. Research has shown that organic fluids shrink the diffuse double layer due to their lower dielectric constant and reduce its thickness. Shrinkage of the double layer leads to higher permeability and lower plasticity in the soil. As a result, the void space for the passage of the fluid increases. With the decrease the dielectric constant from 80.1 to 1.8, permeability is increased up to 1800 times. On the other hand, results show that for a clay with a higher liquid limit and plastic limit, permeability for all the liquids investigated in the research is lower. |
| first_indexed | 2024-04-12T13:40:39Z |
| format | Article |
| id | doaj.art-e080aa1fa1cb41f19c73775cdf594569 |
| institution | Directory Open Access Journal |
| issn | 2322-2093 2423-6691 |
| language | English |
| last_indexed | 2024-04-12T13:40:39Z |
| publishDate | 2018-06-01 |
| publisher | University of Tehran Press |
| record_format | Article |
| series | Civil Engineering Infrastructures Journal |
| spelling | doaj.art-e080aa1fa1cb41f19c73775cdf5945692022-12-22T03:30:51ZengUniversity of Tehran PressCivil Engineering Infrastructures Journal2322-20932423-66912018-06-0151113114610.7508/ceij.2018.01.00866130Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic SolventsMehran Karimpour-Fard0Roghayeh Alimohammadi-jelodar1Department of Civil Engineering, Faculty of Engineering, University of GuilanFaculty of Engineering, University of Guilan, Rasht, IranClayey soils are the most common material used for water sealing and undertake an important role in controlling landfill-related pollution. Organic liquids can adversely affect the effectiveness of clay liners by drastically increasing their hydraulic conductivity. The aim of this study is to investigate and compare the permeability in two types of clay with different plasticity, exposed to the flow of kerosene and diesel as non-polar immiscible liquids and ethanol as a miscible liquid with an intermediate dielectric constant. The effects of plasticity and water content for a given compactive effort are also investigated. Two different clayey soils with different plasticity were provided and their physical properties determined. Next, modified constant-head permeability tests were conducted on the samples. Results show that the lower dielectric constant of the organic fluids, leads to an increase in hydraulic conductivity. Research has shown that organic fluids shrink the diffuse double layer due to their lower dielectric constant and reduce its thickness. Shrinkage of the double layer leads to higher permeability and lower plasticity in the soil. As a result, the void space for the passage of the fluid increases. With the decrease the dielectric constant from 80.1 to 1.8, permeability is increased up to 1800 times. On the other hand, results show that for a clay with a higher liquid limit and plastic limit, permeability for all the liquids investigated in the research is lower.https://ceij.ut.ac.ir/article_66130_172be9b6e612157482add14fb3122294.pdfatterberg limitsclay soildielectric constantpermeabilityplasticity |
| spellingShingle | Mehran Karimpour-Fard Roghayeh Alimohammadi-jelodar Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic Solvents Civil Engineering Infrastructures Journal atterberg limits clay soil dielectric constant permeability plasticity |
| title | Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic Solvents |
| title_full | Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic Solvents |
| title_fullStr | Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic Solvents |
| title_full_unstemmed | Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic Solvents |
| title_short | Permeability of Two Clayey Soils Exposed to Petroleum Products and Organic Solvents |
| title_sort | permeability of two clayey soils exposed to petroleum products and organic solvents |
| topic | atterberg limits clay soil dielectric constant permeability plasticity |
| url | https://ceij.ut.ac.ir/article_66130_172be9b6e612157482add14fb3122294.pdf |
| work_keys_str_mv | AT mehrankarimpourfard permeabilityoftwoclayeysoilsexposedtopetroleumproductsandorganicsolvents AT roghayehalimohammadijelodar permeabilityoftwoclayeysoilsexposedtopetroleumproductsandorganicsolvents |