Szukana fraza: [Abstract = "Results obtained show that the microstructure of the frozen soil undergoes significant modifications. The analysis revealed increase in total area of pores. On the basis of statistical analysis it can be assumed that the specific surface area of bentonite depended on the type of exchangeable cation \(Ca\^2\+, Mg\^2\+, K\^\+, Na\^\+\)."]

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