Abstract
In order to study the change of the properties of petroleum contaminated soil, the samples of diesel contaminated soil with different degrees of pollution were prepared manually, and their basic physical properties were tested through the particle test, specific gravity test and liquid plastic limit test. The results show that the diesel oil has a great influence on the particle size composition of soil, and the diesel oil makes the content of silt decrease, while the clay increase obviously; the specific gravity of soil sample decreases with the increase of oil content, and it is smaller than the proportion of unpolluted soil sample; the influence of diesel oil on the liquid-plastic limit of soil is different, the plastic limit of soil decreases with the increase of oil content, and the liquid limit increases first at a certain oil content, it reaches a peak value and then decreases.
Highlights
Petroleum is a wide range of energy and chemical materials
In order to study the influence of diesel oil on the basic physical properties of soil samples under different pollution levels, the polluted soil samples with oil content of 0%, 4%, 8%, 12% and 16% were prepared respectively(the oil content is calculated according to the ratio of oil quality to dry soil quality)
When the oil content is more than 8%, the viscosity of diesel oil will make the particles bond to a certain extent, and the viscosity will be slightly reduced
Summary
With the growth of energy demand, a large number of crude oil and its products enter into water, air and soil. Because of the high difficulty and high cost of dealing with the contaminated sites, the oil spill has become a serious environmental problem. In China, the research on polluted soil is relatively backward, most of which are about environmental protection and soil science, and the achievements in pure geotechnical engineering are few [3]. The study on the change of the basic properties of diesel contaminated soil is of practical significance to guide the treatment of contaminated soil and the application of engineering construction
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