Determination of Hydrocarbon Contaminated Soil Parameters as Predicted by Critical State Model
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Abstract
The petroleum industry effluents and oil spills cause a serious threat to the ecology and to the soil properties leaving it to be of limited and no use. However, for determining their alternative usage in reference to construction industry, it is essential to analyse their properties. Critical state soil mechanics incorporates elastic and plastic yielding before failure; dilatancy. Critical State of any soil is thus defined as a state which a soil attains if it is continuously sheared, in which further shear strengths can occur with no changes in effective stresses and volumetric change. Critical State occurs at the quasi-static strain rate. In this study, hydro carbon contaminated soil properties were determined along with their Critical State Parameters. It was observed that due to the tension between the hydrocarbon in the pores of soil and water, complete saturation could not be achieved and the sample also disintegrated upon application of back pressure. Under near saturation condition the tests were performed, however, the contaminated soil didn’t not show soil softening even in case of over consolidated soils.
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Critical State model, State Parameters, Hydrocarbon contaminated Soil
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