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Charakterystyka gruntów pochodzenia eolicznego z terenu miasta Rzeszowa

Skrzypczak Izabela, Kokoszka Wanda, Wilk Krzysztof

Inżynieria i Budownictwo

2023

R. 79, nr 1-2

51--54

W artykule scharakteryzowano lessowe osady eoliczne Pogórza Karpackiego z rejonu Rzeszowa. Przedstawiono warunki geologiczne i fizjograficzne obszaru badań. Przeanalizowano właściwości fizykomechaniczne gruntu lessowego na podstawie lokalnych doświadczeń badawczych w nawiązaniu do litologii, stratygrafii i cech zapadowych podłoża. Sklasyfikowano badane grunty lessowe na podstawie parametrów uziarnienia i plastyczności.

The article characterizes the loess aeolian deposits of the Carpathian Foothills from the Rzeszów region. Geological and physiographic conditions of the study area are presented. The physico-mechanical properties of the loess soil were analyzed on the basis of local research experience in relation to the lithology, stratigraphy and collapsing features of the subsoil. The investigated loess soils were classified on the basis of granulation and plasticity parameters.

Wpływ zanieczyszczenia olejem napędowym na uziarnienie i plastyczność mad z rejonu Warszawa-Siekierki

Izdebska-Mucha Dorota, Trzciński Jerzy, Klein Marta

Przegląd Geologiczny

2021

Vol. 69, nr 12

800-810

The paper presents the results of testing flood facies sediments - muds. The term “‘muds” refers to a genetic type of deposits, regardless of their variability in particle size composition and organic matter content. Due to the poor geological engineering properties, such as, high lithological variability, low degree of diagenesis, as well as high moisture content and organic matter content, muds are classified as weak soils and river valleys are the areas of complicated ground conditions. The paper presents lithological, physical and chemical properties of muds from the floodplain of the Vistula River valley in the area of Warsaw-Siekierki. A series of mud samples contaminated with diesel fuel in the range of 2-16%wereprepared. The microaggregate analyses as well as the plastic and liquid limit tests showed a significant effect of contamination on the soil index properties. The increase in diesel fuel content resulted in the loss of soil plasticity and cohesion. The aggregation of clay particles and the increase in the silt fraction content was observed. The most significant changes of properties were obtained for the mud samples containing 6-16% of diesel fuel. The research of soils contaminated with petroleum products is of great importance in determining the geological engineering conditions of the subsoil for foundation purposes.