Document Type : Original Articles
MSc. in Geotechnical Engineering, Faculty of Civil Engineering, K.N Toosi University of Technology, Tehran
Associate Professor, Department of Environmental Engineering, Faculty of Civil Engineering, K.N Toosi University of Technology, Tehran
Associate Professor, Department of Geotechnical Engineering, Faculty of Civil Engineering, K.N Toosi University of Technology, Tehran
MSc. in Environmental Engineering, Faculty of Civil Engineering, K.N Toosi University of Technology, Tehran
The contamination of soils and groundwater by toxic and/or hazardous organic pollutants is a widespread environmental problem. One group of these contaminants is petroleum products. Soil pollution caused by petrochemical activities, oil spills and leakage is not only an environmental issue but also a geotechnical issue. Physical and chemical reactions between soil and contaminant lead to change in soil properties and behaviour. In this paper, a set of laboratory tests including the direct shear test, uniaxial compression test, Atterberg limits and Scanning Electron Microscope (SEM) have been carried out on Kaolinite samples polluted with different percentages of gasoil. The direct shear test results demonstrate that increasing the pollutant percentage leads to an increase of cohesion and a decrease in internal friction angle of the soil. Also, increasing the amount of gasoil to a certain percentage results in a decrease in the uniaxial strength and the plasticity index of the soil.
- Khamehchiyan, M., A. Hossein Charkhabi, and M. Tajik, Effects of crude oil contamination on geotechnical properties of clayey and sandy soils. 2007, Elsevier. p. 220-229.
- Fine, P., E.R. Graber, and B. Yaron, Soil interactions with petroleum hydrocarbons: abiotic processes. 1997, Elsevier. p. 133-153.
- Yong, R.N., Geoenvironmental engineering: Contaminated soils, pollutant fate, and mitigation. 2002: CRC Press.
- Sridharan, A. and G.V. Rao, Shear strength behaviour of saturated clays and the role of the effective stress concept. 1979, Thomas Telford. p. 177-193.
- Moore, C.A. and J.K. Mitchell, Electromagnetic forces and soil strength. 1974, Ice Virtual Library. p. 627-640.
- Lambe, T.W., The engineering behavior of compacted clay. ASCE Journal of Soil Mechanics and Foundation Division, 1958. 84(2): p. 1-35.
- Shin, E.C. and B.M. Das, Bearing capacity of unsaturated oil-contaminated sand. 2001, The International Society of Offshore and Polar Engineers.
- Rehman, H.U., S.N. Abduljauwad, and T. Akram, Geotechnical behavior of oil-contaminated fine-grained soils. 2007. p. 1-12.
- Puri, V.K., Geotechnical aspects of oil-contaminated sands. 2000, Taylor & Francis. p. 359-374.
- Al-Sanad, H.A. and N.F. Ismael, Aging effects on oil-contaminated Kuwaiti sand. 1997, American Society of Civil Engineers. p. 290-293.
- Rehman, H., S.N. Abduljauwad, and T. Akram, Geotechnical behavior of oil-contaminated fine-grained soils. Electronic Journal of Geotechnical Engineering, 2007. 12: p. 1-12.
- Singh, S.K., R.K. Srivastava, and S. John, Settlement characteristics of clayey soils contaminated with petroleum hydrocarbons. 2008, Taylor & Francis. p. 290-300.
- Kermani, M., Effects of crude oil contamination on shear strength parameters and compressibility of soil. 2010.
- Al-Hamaiedh, H.D. and O.N. Maaitah, Treatment of oil polluted soil using electrochemical method. Elsevier. p. 105-110.
- Mitchell, J.K. and K. Soga, Fundamentals of soil behavior. 1976: Wiley New York.
- agency-U.S.EPA, E.p., Proposed Guidelines for Carcinogen Risk Assessment. 1996. p. 17960-18011.
- Zhao, D., Experimental study of stress-strain and shear strength behavior of contaminated cohesive soils. 1996, Johns Hopkins University.
- Al-Shayea, N.A., The combined effect of clay and moisture content on the behavior of remolded unsaturated soils. 2001, Elsevier. p. 319-342.
- Das, B.M., Principles of geotechnical engineering. 1994: Cengage Learning.