ENGINEERING-GEOLOGICAL AND MICROSTRUCTURAL PROPERTIES OF GLACIAL TILLS POLLUTED WITH PETROLEUM SUBSTANCES
Journal Title: Biuletyn Państwowego Instytutu Geologicznego - Year 2011, Vol 446, Issue 446
Abstract
In this paper the microstructural characteristic of glacial till polluted in situ with diesel oil (ON) is presented as well as the analysis of: particle size distribution, Atterberg limits, plasticity index and particle density in relation to the degree of the soil pollution. The microstructural study was conducted on undisturbed soil samples, while the engineering-geological parameters were tested on soil pastes containing 0, 2, 4, 8, 12, 16% of ON. The obtained results showed that as the pollution degree increases the content of silt and clay decreases and the content of sand increases. It was observed in polluted samples that the values of Atterberg limits and plasticity index increased, while the particle density values decreased due to adsorption of hydrocarbons on soil particles. Microsturctural analysis was conducted using Scanning Electron Microscope (SEM) and STIMAN software. The analysis revealed an increase of values in such morphological parameters as: total porosity, number of mesopores, pore diameter, pore area and pore perimeter. The microstructure converted to more isotropic, which was supported by decrease in coefficient of anisotropy and number of fissure pores.
Authors and Affiliations
Dorota IZDEBSKA-MUCHA, Cecylia SZYSZKO, Jerzy TRZCIŃSKI
Keywords
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