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The frost susceptibility of the recycled materials to subgrade of the pavement
Nehybová, Eva ; Mondschein,, Petr (referee) ; Stehlík, Dušan (advisor)
In the theoretical part of the thesis, different methods of testing frost susceptibility in the Czech Republic and other countries of the European Union are compared. The practical part of the thesis deals with laboratory testing of frost susceptibility of concrete and mixed recycled materials using the direct method of frost heave tests as well as determining the California Bearing Ratio (CBR) and design module of elasticity using the cyclic triaxial test. Suitability of materials for construction of road infrastructure is then assessed on the basis of the results of these tests.
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Considerations of the laboratory reference density for fine soil
Grmela, Jan ; Pácha, Petr (referee) ; Stehlík, Dušan (advisor)
The aim of this thesis is to describe the field of the soil compaction. The thesis introduces the particular test methods of the soil compaction, their principles and the implementation techniques. The practical part deals with the examination of a fine-grained sample in a laboratory condition. The compaction is achieved by various methods. In accordance with the compaction results, the soil is further examined for the Immediate Bearing Index (IBI) and California Bearing Ratio (CBR) after four day long saturation in water. The examination of the achieved results and finding the most suitable method for the fine-grained material is the outcome of the thesis.
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The waste buildings material to subgrade of the pavement
Ševc, Jan ; Pecha, Karel (referee) ; Stehlík, Dušan (advisor)
The thesis is focused on the use of waste buildings materials to subgrade of the pavement. In detail it deals with monitoring the carrying capacity of the material used to replace unsuitable subgrade mainly of the urban road communications. It practically verifies California bearing ratio and resistance to frost and water of the waste buildings materials firmed by cement for possible use in subbase layers. The amount of residues in recycled bricks is essential for positive results in terms of the properties of materials in subgrade of the pavement.
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The Usage of the dynamic cone penetrometer to road buildings
Antošová, Klára ; Hýzl,, Petr (referee) ; Stehlík, Dušan (advisor)
The work is devoted to the topic of dynamic cone penetrometer use in road construction. The first part deals with the description of the measuring device of dynamic cone penetrometer and using it in controlling compaction of embankments of roads. Furthermore, comparing the correlation relationships with other commonly used tests. The practical part deals with comparing the results of CBR and DCP on the same materials and evaluation of both tests.
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