Geotechnical Properties of Crude Oil Contaminated Sand

Author(s):  
VK Puri ◽  
BM Das ◽  
EE Cook ◽  
EC Shin
2021 ◽  
Vol 54 (2B) ◽  
pp. 76-84
Author(s):  
Ahmed K. Al-Nimah

Oil contamination in soils causes several geotechnical problems that must be considered during construction. The contamination occurs due to oil seepage which could happen during oil explorations and production processes or oil transportation. The site of West Qurna oilfield in Basrah was selected for this study because it has witnessed oil seepages many times. In order to study the significant impact on geotechnical properties of soils in the West Qurna site, as uncontaminated bulk soil sample was taken at a depth of 1 m, and crude oil was added at weight ratios of 2, 4, 6, 8, and 10 %. Laboratory tests were performed on all samples; these tests included particle size distribution, moisture content, Atterberg’s limits, consolidation, unconfined compressive strength, and water absorption. The results show that soil at the West Qurna site is clayey silt with little sand and the moisture content is 29.21%. The values of liquid limit and plasticity index were gradually decreased, while the plastic limit was increased with increasing of crude oil in the soil of study. There was an increase in consolidation coefficients [compressive index, swelling index, pre-consolidation pressure, and coefficient of consolidation] with an increase in the percentages of crude oil in the soil. The results also show that there was a decrease in the values of unconfined compressive strength and absorption of water as the crude oil was increased in the soil.


2007 ◽  
Vol 89 (3-4) ◽  
pp. 220-229 ◽  
Author(s):  
Mashalah Khamehchiyan ◽  
Amir Hossein Charkhabi ◽  
Majid Tajik

2018 ◽  
Vol 7 (4) ◽  
pp. 153 ◽  
Author(s):  
Amirhossein Mohammadi ◽  
Taghi Ebadi ◽  
Mehrdad Ahmadi

Oil and its derivatives not only change the chemical and biological properties of the soils, but also affect their geotechnical properties. Effects of oil contamination on a sandy soil which mixed with bentonite was assessed in terms of compaction, shear strength, and consolidation behavior. The experiments were carried out by polluting dry sandy soil with 2.5, 5, 7.5, 10% w/w crude oil at different bentonite contents (0, 5, 10, 15, 20% w/w). Results of compaction tests indicated that at a fixed bentonite content, with increasing crude oil content, the maximum dry density increases, while the optimum water content decreases. Similarly, at a fixed contaminant content, increasing the bentonite content in the soil leads to increase in soil maximum dry density and the optimum moisture content. Moreover, direct shear tests revealed that at a specific bentonite content, higher contamination concentration causes lower internal friction angle. The effect of oil content on the coefficient of consolidation (Cv) and void ratio of soils with 0, 5, 10, 15, and 20 percent bentonite contents was studied. The results of consolidation tests indicated that at a fixed bentonite content Cv has an overall increasing pattern which is in its maximum amount at 5% oil content.


2017 ◽  
pp. 1078-7275.EEG-1883
Author(s):  
Hossein Soltani-Jigheh ◽  
Hamed Vafaei Molamahmood ◽  
Taghi Ebadi ◽  
Ali Abolhasani Soorki

Author(s):  
Rana A.J. Al-Adhamii ◽  
Falah H. Rahil ◽  
Yasser M. Kadhim ◽  
Thaer A. Atia

2021 ◽  
Vol 283 ◽  
pp. 106021
Author(s):  
Mahmood Ahmadi ◽  
Mohsen Abbaspour ◽  
Taghi Ebadi ◽  
Reza Maknoon

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