Collapse Potential of Oil-Contaminated Loessial Soil (Case Study: Golestan, Iran)

Oil pollution in soils is an important problem for foundations, excavations, and slopes. Soil contamination occurs when oil leaks from storages, pipelines, petrochemical activities, etc. for so many reasons. This pollution changes geotechnical properties of soils. Researchers have tested different t...

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Bibliographic Details
Published in:Geotechnical and geological engineering 2020, Vol.38 (1), p.255-264
Main Authors: Nokande, Saber, Khodabandeh, Mohammad Ali, Hosseini, Seyed Sadegh, Hosseini, Seyed Mahdi
Format: Article
Language:English
Subjects:
Civil Engineering
Collapse
Contamination
Earth and Environmental Science
Earth Sciences
Gas oil
Gas pipelines
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Loess
Oil pollution
Original Paper
Petrochemicals
Petrochemicals industry
Petroleum pipelines
Pipelines
Pollution
Saturation
Slope
Soil contamination
Soil pollution
Soil properties
Soil types
Soil water storage
Soils
Submarine pipelines
Terrestrial Pollution
Void ratio
Waste Management/Waste Technology
Water pollution
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Summary:Oil pollution in soils is an important problem for foundations, excavations, and slopes. Soil contamination occurs when oil leaks from storages, pipelines, petrochemical activities, etc. for so many reasons. This pollution changes geotechnical properties of soils. Researchers have tested different types of soil to assess their behavior once oil-contaminated. However, to the best of our knowledge, no study on oil-contaminated collapsible soil is published. Accordingly, the present study is an attempt to test collapse potential of these soils. Samples were tested in different saturation conditions. Saturated tests were carried out on clean soil with water, gas oil or lamp oil as pore fluid, separately. Another series of samples were partially contaminated with gas oil or lamp oil and saturated with water. Results showed that, with disturbing loess soils, collapse potential decreases even though the samples were remolded at the same void ratio as that of undisturbed samples. Saturating the samples with gas oil and lamp oil virtually disappeared collapse potential and made it to a very slight value. The samples contaminated with different gas oil and lamp oil contents showed an increase in collapse potential with increasing oil content.
ISSN:0960-3182
1573-1529
DOI:10.1007/s10706-019-01014-9