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Frost susceptibility of improved soils to pavement subgrade
Lorenc, Daniel ; Špaček, Petr (referee) ; Stehlík, Dušan (advisor)
This diploma thesis deals with the issue of the effect of freezing on soils in subgrades of road structures. The theoretical part compares methods of determining the frost susceptibility of soils used in selected countries of the European Union and the Czech Republic. It also explains the principle of frost heave in subgrade layers. The aim of the practical part is to compare the direct and indirect method of determining frost susceptibility in the Czech Republic and the California bearing ration CBR or the immediate bearing ratio IBI.
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Frost susceptibility of soils and waste materials to pavement subgrade
Sokolová, Veronika ; Mondschein,, Petr (referee) ; Stehlík, Dušan (advisor)
Destruction of road constructions due to the frost is in locations with temperatures under the zero a problem which leads to permanent deformation. The theoretical part of this thesis deals with the freezing process of the pavement and its subgrade. It presents methods for determining the rate of frost susceptibility in both the Czech Republic and abroad. Describes the materials used in the subgrade of roads and their suitability in terms of frost susceptibility. The thesis closely examines the fly-ashes, their properties and possibilities of using in the construction industry. The practical part of the thesis focuses on the performance of direct laboratory frost heave tests, immediate bearing index tests, California bearing ratio tests and cyclic load triaxial tests to determine the modulus of elasticity. Tests are carried out on the soil, the soil mixtures with certain percentages of fly ash from different sources at the same soil treated with lime. Then the results are compared and dependence between the measured characteristics of materials is created.
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Frost susceptibility of improved soils to pavement subgrade
Lorenc, Daniel ; Špaček, Petr (referee) ; Stehlík, Dušan (advisor)
This diploma thesis deals with the issue of the effect of freezing on soils in subgrades of road structures. The theoretical part compares methods of determining the frost susceptibility of soils used in selected countries of the European Union and the Czech Republic. It also explains the principle of frost heave in subgrade layers. The aim of the practical part is to compare the direct and indirect method of determining frost susceptibility in the Czech Republic and the California bearing ration CBR or the immediate bearing ratio IBI.
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Frost susceptibility of soils and waste materials to pavement subgrade
Sokolová, Veronika ; Mondschein,, Petr (referee) ; Stehlík, Dušan (advisor)
Destruction of road constructions due to the frost is in locations with temperatures under the zero a problem which leads to permanent deformation. The theoretical part of this thesis deals with the freezing process of the pavement and its subgrade. It presents methods for determining the rate of frost susceptibility in both the Czech Republic and abroad. Describes the materials used in the subgrade of roads and their suitability in terms of frost susceptibility. The thesis closely examines the fly-ashes, their properties and possibilities of using in the construction industry. The practical part of the thesis focuses on the performance of direct laboratory frost heave tests, immediate bearing index tests, California bearing ratio tests and cyclic load triaxial tests to determine the modulus of elasticity. Tests are carried out on the soil, the soil mixtures with certain percentages of fly ash from different sources at the same soil treated with lime. Then the results are compared and dependence between the measured characteristics of materials is created.
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