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The paper deals with an analysis of the settlement of a tank. The tank has a diameter of 18.6 m and a volume of 1760 m3. The subsoil consists of soft sandy clays and clays of low to medium plasticity. The tank has been founded on a slab of a thickness of 0.2 m. A consolidation layer of compacted gravel of a thickness of 1 m was created immediately below the foundation slab. The soft subsoil was improved using the stone columns. The stone columns were installed using vibro-replacement bottom feed technology. The st...

The paper deals with numerical analysis of the stability of an embankment reinforced using a geogrid. The analysis is mainly focused on the impact of the Rinter parameter, which represents the ratio of the soil-geogrid interface shear strength to the shear strength of the soil, on the deformations, and the global stability of the embankment. The properties of the soil-geogrid interface were measured using a modified large size direct shear test apparatus. The biaxial geogrid made of polypropylene with a tensile st...

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 ...

The article presents design and verification of a road embankment supported by reinforced retaining walls with a passive facing system, which was the most optimal and effective method to design a road embankment in a cramped space in a flyover intersection of highways. The cross section presented in the paper consists of three roads at different levels, when the road in the middle is placed about 8 m above the other ones. The design was done using the analytical computational model and the numerical modelling, bas...

The article deals with determination of shear strength properties of improved coarse - grained soils using a large-dimensional direct shear test apparatus. A road embankment in front of a new bridge over the Danube River in the Komarno city will be made of the gravel improved by the cement. Aim of the analysis is determination of the shear strength properties of this improved material for optimal and reliable design of the road embankment. The shear strength of gravel was determined in the SHEARMATIC 27-WF2304 she...

The main goal of compaction is decreasing the porosity of soils. Gravel columns belong to relatively new methods of improving the soil characteristics. Using them it is possible to expect to accelerate the consolidation of the subsoil, but also increasing the bearing capacity and decreasing the settlement of initially unadvisable soils. Because it was missing adequate research in this field, the design of gravel columns was based a long time on empirical experiences. Particularly based on foreign knowledge are pre...

A stone column is often used technology of a ground improvement. The design of stone columns is still based on experiences and empirical computational methods. The most important properties of stone column are unit weight of a soil, relative density, strength and deformation properties. The total resistance and deformation of stone column is also significantly affected by properties of the original subsoil. The article deals with determination of the relative density of the stone columns by using the in пїЅ situ t...

During period of preparing the construction of halls of the industrial park, according to the geotechnical investigation were found adverse properties of soil. Below the ground surface was situated 5.5 m soft clay layer, deeper clayey gravel. Due to the nearby located river, the groundwater level was found just below the ground surface. Strict requirements to fulfilling first of all the serviceability limit state have led to the preparing the load test in real geological conditions in scale 1:1. Expecting load on ...

Twenty years after finishing the dam ?unovo on river Danube about 15 km beneath Bratislava were after regular controls gradually exclude from system some observation boreholes. There were realised new investigation boreholes. The main reason of these boreholes was verification of the soil characteristics in depth where the periodical changing of water in Danube and in reservoir had negative influence on the permeability characteristics. One of the most important factors of safety is filtration stability of granula...