Pore space studies on Wartanian glacial till (Central Poland) polluted with petrol and diesel oil, based on mercury porosimetry
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Air-dry samples of glacial till were polluted in laboratory with petrol and diesel oil. A comparative analysis of natural and contaminated material was made on the basis of mercury porosimetry measurements. The investigation revealed relatively slight changes in pore space of polluted samples, which were associated with adsorption of hydrocarbons on the soil particles rather than microstructure change. Introduction of non-polar organic fluid into pores of the soil did not cause rearrangement of natural soil structure. Due to initial air-dry state of soil material, these findings pertain to unsaturated soils only. The results presented contribute to the crucial, but still poorly recognized problem of geological-engineering properties of organic contaminated soils.
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