Effects of hydrocarbon contamination on the engineering geological properties of Neogene clays and Pleistocene glacial tills from Central Poland

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 streng...

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Bibliographic Details
Published in:Acta geologica polonica 2022-01, Vol.72 (4), p.529
Main Authors: Dobak, Paweł, Izdebska-Mucha, Dorota, Stajszczak, Piotr, Wójcik, Emilia, Kiełbasiński, Kamil, Gawriuczenkow, Ireneusz, Szczepański, Tomasz, Zawrzykraj, Piotr, Bąkowska, Anna
Format: Article
Language:English
Subjects:
Clay
Contaminants
Diesel fuels
Hydrocarbons
Neogene
Permeability
Petroleum engineering
Petroleum products
Physical properties
Pleistocene
Pore pressure
Shear strength
Soil contamination
Soil permeability
Soil properties
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Summary: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.
ISSN:0001-5709
2300-1887
DOI:10.24425/agp.2022.142647