@ARTICLE{Dobak_Paweł_Effects_2022, author={Dobak, Paweł and Izdebska-Mucha, Dorota and Stajszczak, Piotr and Wójcik, Emilia and Kiełbasiński, Kamil and Gawriuczenkow, Ireneusz and Szczepański, Tomasz and Zawrzykraj, Piotr Zbigniew and Bąkowska, Anna}, volume={vol. 72}, number={No 4}, journal={Acta Geologica Polonica}, pages={529-555}, howpublished={online}, year={2022}, publisher={Komitet Nauk Geologicznych PAN}, publisher={Wydział Geologii UW}, abstract={Petroleum products influence the engineering behaviour of the soil. Neogene clays and glacial tills from Central Poland were tested under laboratory conditions to evaluate the changes of selected physical and mechanical parameters: particle size distribution, particle density, swelling, shear strength and permeability. Four petroleum products were used in the experiments: diesel fuel, kerosene, jet fuel and mineral engine oil. The study revealed that even for the lowest degree of contamination the values of physical and mechanical properties of the soils changed significantly. Greater variation can be expected in soils contaminated with high-viscosity compounds. Also, higher relative changes were found for glacial tills than for Neogene clays. Consolidation tests revealed changes in soil permeability depending on the soil composition and the physical properties of the contaminant – considerable reduction of permeability was observed for glacial tills contaminated with light Jet fuel, while the reduction was lower for Neogene clays. The obtained results indicate the role of mesopores and the dimensionless pore pressure coefficient in changes of soil permeability. The methodological issues regarding testing and analysing the hydrocarbon-contaminated soils were also presented and discussed, which might be useful for researchers studying contaminated soils.}, type={Article}, title={Effects of hydrocarbon contamination on the engineering geological properties of Neogene clays and Pleistocene glacial tills from Central Poland}, URL={http://www.czasopisma.pan.pl/Content/125365/PDF/10_Dobak.pdf}, doi={10.24425/agp.2022.142647}, keywords={Petroleum products, contamination, Clay soils, Permeability, shear strength, swelling, particle size distribution}, }