Research of the Behavior of Clay Materials with Double Porosity

Hynek Lahuta and Luis Andrade Pais
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Hynek Lahuta: Faculty of Civil Engineering, VŠB—Technical University of Ostrava, 70800 Ostrava, Czech Republic
Luis Andrade Pais: Faculty of Engineering, University of Beira Interior, 6200-001 Covilhã, Portugal

Sustainability, 2021, vol. 13, issue 6, 1-8

Abstract: This contribution presents results from a series of compression and undrained triaxial tests to study the mechanical behavior of dump clay from the north of Bohemia. The use of these materials as a foundation for construction can’t be achieved without the adoption of some precautions. This comes from embankment, formed by digging the ground (altered claystone), up to the level of coal mining which is in a sub horizontal stratigraphic layer. A potential static liquefaction behavior was observed in undrained tests for high confinement stress. A structural collapse was noticed with the results obtained in the triaxial test. This collapse is characterized by an unexpected large decrease in deviator and mean effective stress. The soils formed have strength properties that are potentially dangerous. These concepts can improve the use of these kinds of soils in geotechnical engineering work. It continues and expands the results obtained in previous research, especially the future problematic use of these materials as the foundation soil for line or building structures.

Keywords: triaxial test; laboratory measurement; dumps material (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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