National Repository of Grey Literature 14 records found  previous11 - 14  jump to record: Search took 0.01 seconds. 
The influence of crystallization additives to waterproof concrete
Rosecký, Pavel ; Louda, Pavel (referee) ; Hela, Rudolf (advisor)
This bachelor´s thesis deals with influence of crystallization additives to waterproof concrete. In the theoretical part is detailed analysis individual components in concrete production, improving waterproofing properties and finally functions and properties of crystallization materials. In the practical part I deal with influence of selected crystallization additives on properties of fresh and hardened concrete.
Studying the influence of additives on rheology XYPEX fresh concrete and hardened concrete durability
Kochová, Kateřina ; Roth, Tibor (referee) ; Hela, Rudolf (advisor)
This thesis is focused on the study of the influence of crystalline ingredients XYPEX, on the rheology of fresh concrete and durability of hardened concrete. It examines the influence of crystalline additives on the rheology of cement pastes with different types of cement with different temperatures, increasing water tightness and gas tightness and compressive strength. Also assesses pore structure with different bridging cracks.
Properties of cement composites with fiber reinforcement
Jankech, Filip ; Sitek,, Libor (referee) ; Bodnárová, Lenka (advisor)
This thesis summarizes the knowledge of the possibility of using organic fibres as dispersed reinforcement into cement composites. It is concretely a summary of knowledge about the types and properties of synthetic and cellulosic fibres, their influence on the properties of fresh and hardened cement composite and lastly a description of the fire resistance of cement composites and the effect of organic fibres on the action of those composites at high temperatures and in the presence of fire. The experimental part is supposed to verify the effect of the cellulose fibres on increasing the durability of the cement composite at high temperatures.
Technical condition of sewer pipes
Došek, Jan ; Raclavský, Jaroslav (referee) ; Hluštík, Petr (advisor)
The aim of this bachelor thesis is to define damages of sewer pipes from the constructional point of view and by selected damages set the limits according to valid standards in the Czech Republic. The beginning of this work is an introduction to the legislative and setting of the basic concepts. Another point of this part is to characterize particular materials and damages by which are they effected. It is the questions of ovalisation, longitudinal bending, positional deviation, mechanical wear, corrosion, crack, pipe break and collapse. The main point of this work are calculation part, where the limits for selected damages of particular materials are set one by one. The result are the summary tables that shows the limits and allow the comparison of these analysed sewer pipe materials.

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