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Optimalization of Technological Properties of Cement Sand Mixtures
Burianová, Klára ; Jelínek, Petr (referee) ; Tegel, Michal (referee) ; Rusín, Karel (advisor)
The work deals with optimization of the technological properties of cement-sand mixtures. The main objective is to find the correct mixture of the individual components which contribute to the rapid solidification of the mixture, hence shorter dismantling. The content is also of a method of measuring and recording during the plasticity of the mixture. Also assessment of the velocity of hydration heat cement mixture in the initial stage of the solidification process in the course of the strength properties of the mixture. To assess these phenomena was used calorimetric method used for measuring hydration heat cement mixture. Further measurements plasticity mixtures and mechanical and physical methods for measuring the compressive strength with the help of a measuring instrument LRU-D.
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Cement mixtures and their utilization in castings production to improve working environment
Svobodová, Radka ; Cupák, Petr (referee) ; Burianová, Klára (advisor)
This bachelor thesis describes the production of cement, its subdivision and use in industy, its chemical, physical and technological properties. Here it is writen about its virtues and qualities, but also about drawbacks and deficiencies. For the cement mixtures is important their porosity and total recovery in cement mixtures. As a result of the environmental protection, it is written about recovery and recycling of cement and its subsequent use as well. This thesis also involves laboratory measurement of mechanical properties.
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Binders on the base alumina cements and their properties
Morávková, Jitka ; Cupák, Petr (referee) ; Burianová, Klára (advisor)
The Bachelor Thesis describes chemical and mineralogical structure, as well as alumina cements manufacture and some of their physical and techno-logical properties. It takes accelerators or plasticizers induced changes by search method. An illustrative laboratory measurement of mixture with accel-erator and plasticizer is complementary to theoretical knowledge in fluidity, air permeability and strength of mixture with aluminium silicate cement binder.
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Water soluble foundry binder with heat hardening
Prokop, Tomáš ; Burianová, Klára (referee) ; Cupák, Petr (advisor)
Foundry production produces the biggest amount of dangerous waste, which has a negative impact on environment and working conditions in the foundry. The foundry engineers test new technologies of shaping mixtures with new binders to protect environment and working conditions. We can reduce the production of dangerous waste by using better technologies and less harmful materials, which are needed for modeling forms and cores. The large source of pollution are binders, hardeners and catalyzer needed for binding sand. This work is focused on new types of ecological binders, which are dissolvable in water and are formed by setting temperature. These binders are ecological variants of known inorganic and organic binders.
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OPTIMIZATION OF TECHNOLOGICAL PROPERTIES OF CEMENT SAND MIXTURES
Burianová, Klára ; Nová, Iva (referee) ; Neudert, Alois (referee) ; Rusín, Karel (advisor)
The work deals with optimization of the technological properties of cement-sand mixtures. The main objective is to find the correct mixture of the individual components which contribute to the rapid solidification of the mixture, hence shorter dismantling. The content is also of a method of measuring and recording during the plasticity of the mixture. Also assessment of the velocity of hydration heat cement mixture in the initial stage of the solidification process in the course of the strength properties of the mixture. To assess these phenomena was used calorimetric method used for measuring hydration heat cement mixture. Further measurements plasticity mixtures and mechanical and physical methods for measuring the compressive strength with the help of a measuring instrument LRU-D.
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Zhodnocení revitalizace biocentra - Vícemilické rybníky
Burianová, Klára
This bachelor essay occupies with an evaluation of revitalization of biocenter Vicemilices ponds. It is a system of two flow tanks. They serve primarily as a retention area and the protection of the urban nearby towns from flooding. The aim of this work is to evaluate the revitalization and current status of the area and also make a quality monitoring. By a form of literary review is delineated a problematic of a small reservoirs, revitalizations, water quality and pollution, etc. The next part deals with the characteristics of the territory. Material and Methods section describes the procedure of field survey and monitoring of water quality. Quality was assessed three times a year and evaluated using selected indicators. The results were shown in graphs and compared with ČSN 75 7221 and the government decree n. 401/2015 in valid wording. The results show that the most problematic substance is phosphorus. Phosphorus gets into the river and then into ponds by waste water, depending on the absence of the WWTP in the upper part of the basin.
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Payment order procedures
Burianová, Klára ; Frintová, Dita (advisor) ; Vyskočilová, Silvia (referee)
This diploma thesis covers payment order procedures and its object is to offer a complex view on the payment order procedures. The thesis is devided into seven main parts. The first part of the thesis introduces the payment order procedures. It also focuses on principles of the payment order procedures, on competent courts and on files. Then, the reader is about to ascertain successively about a payment order, an electronic payment order, a European payment order and a bill (cheque) payment order from the second to the fifth part of the thesis. The sixth part of the thesis concerns the payment order procedures according to a proposal of the new Civil Procedure Code. The final seventh part is related to a payment order procedure and an action order procedure under the French Code de procédure civile. In payment order procedures, proceedings are not ordered and the facts of the matter are not substantiated or proven. The court decides without hearing the defendant on the basis of a proposal. In a payment order, the defendant is ordered to pay to the plaintiff the filed receivable and costs of proceedings, or to file the protest. The difference between an electronic payment order and a payment order is in the form of the request. The advantage of an electronic payment order procedure is that the request for an...
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Optimalization of Technological Properties of Cement Sand Mixtures
Burianová, Klára ; Jelínek, Petr (referee) ; Tegel, Michal (referee) ; Rusín, Karel (advisor)
The work deals with optimization of the technological properties of cement-sand mixtures. The main objective is to find the correct mixture of the individual components which contribute to the rapid solidification of the mixture, hence shorter dismantling. The content is also of a method of measuring and recording during the plasticity of the mixture. Also assessment of the velocity of hydration heat cement mixture in the initial stage of the solidification process in the course of the strength properties of the mixture. To assess these phenomena was used calorimetric method used for measuring hydration heat cement mixture. Further measurements plasticity mixtures and mechanical and physical methods for measuring the compressive strength with the help of a measuring instrument LRU-D.
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OPTIMIZATION OF TECHNOLOGICAL PROPERTIES OF CEMENT SAND MIXTURES
Burianová, Klára ; Nová, Iva (referee) ; Neudert, Alois (referee) ; Rusín, Karel (advisor)
The work deals with optimization of the technological properties of cement-sand mixtures. The main objective is to find the correct mixture of the individual components which contribute to the rapid solidification of the mixture, hence shorter dismantling. The content is also of a method of measuring and recording during the plasticity of the mixture. Also assessment of the velocity of hydration heat cement mixture in the initial stage of the solidification process in the course of the strength properties of the mixture. To assess these phenomena was used calorimetric method used for measuring hydration heat cement mixture. Further measurements plasticity mixtures and mechanical and physical methods for measuring the compressive strength with the help of a measuring instrument LRU-D.
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Water soluble foundry binder with heat hardening
Prokop, Tomáš ; Burianová, Klára (referee) ; Cupák, Petr (advisor)
Foundry production produces the biggest amount of dangerous waste, which has a negative impact on environment and working conditions in the foundry. The foundry engineers test new technologies of shaping mixtures with new binders to protect environment and working conditions. We can reduce the production of dangerous waste by using better technologies and less harmful materials, which are needed for modeling forms and cores. The large source of pollution are binders, hardeners and catalyzer needed for binding sand. This work is focused on new types of ecological binders, which are dissolvable in water and are formed by setting temperature. These binders are ecological variants of known inorganic and organic binders.
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