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The paper deals with the laboratory testing of the shear strength of the soil-geotextile interface. Two samples of soil were tested, i.e., coarse-grained poorly graded sand and fine poorly graded ash. The soils were reinforced using the Thrace WG80 black woven geotextile, which is suitable for road, railway, and geo-bag applications. The tests were executed using a large-size direct shear test apparatus. The shear strength of the interface was determined using the large-size direct shear test apparatus. The ground...

Stone columns are one of the most-used technologies of soil improvement in Slovakia. The stone columns installed using the vibro-replacement technology cause the change in the stress state and the properties of the surrounding soil. These changes are often not taken into account in the design. The paper deals with determine the change of the stress state and oedometer modulus in the soil around a single stone column. The calculations have been prepared in the form of a parametric study. The selected properties of ...