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Low-Energy Timber Detached House
Král, Jakub ; Hučík, Michal (referee) ; Králová, Zuzana (advisor)
The aim of my bachelor thesis is a project of new low-energy detached house with garage, two-floor house without cellar. The building is covered with flat green roof. The structural system is composed of timber I-joists Steico. Detached house consists of one housing unit of category 5+1.
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The design of ETICS using insulation core made of aerated concrete
Machala, David ; Zach,, Jiří (referee) ; Drochytka, Rostislav (advisor)
This thesis deals with theoretical suggestions of contact self-supporting insulation system with an insulating core made of porous concrete. The text prepared knowledge about ETICS system, the properties of porous concrete are thoroughly described, including the history and the most often used technology for production of porous concrete. The conclusion is made by comparison of economical and thermal insulation criteria using optimizing calculation and the applicability criteria of proposed ETICS are stated.
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Energy absorption of cellular foams in high strain rate compression test
Králík, V. ; Němeček, J. ; Jíra, A. ; Fíla, Tomáš ; Zlámal, P.
Aluminum foams are structural materials with excellent energy absorption capacity jointed with very low specific weight and high stiffness. Products of aluminum foams are used in a wide range of structural and functional applications (e.g. as a part of composite protection elements) due to its attractive properties. Full characterization of deformation behaviour under high-strain rate loading is required for designing these applications. The aim of this study is to compare stress-strain behaviour and energy absorption of the aluminium foam structure with conventional energy absorbing materials based on polystyrene and extruded polystyrene commonly used as protective elements. The compressive deformation behaviour of the materials was assessed under impact loading conditions using a drop tower experimental device.
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Investigation of deformation behaviour of aluminium foam under high-strain rate loading and comparison with conventional energy absorbing material
Zlámal, P. ; Fíla, Tomáš ; Jiroušek, O. ; Králík, V.
The aim of this study is proper description of stress-strain behaviour of the metal foam structure Alporas under high-strain rate loading. Stress-strain response of Alporas specimens is measured during an impact test using a drop tower experiment. Strain of the specimens is evaluated by two independent approaches: i) double numerical integration of acceleration data and ii) digital image correlation technique. Thus, experimental setup is equipped with triaxial accelerometer and high speed camera. Resulting stress-strain curves are compared with behaviour of polystyrene material samples (polystyrene material is commonly used as a shock absorber) obtained from the same testing procedure and with stress-strain function determined from Alporas quasi-static compression testing.
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Ekologická likvidace a recyklace plastických hmot
Nippon EKO a.s.
Zpracování polyolefinových odpadů metodou katalytického rozkladu polymerů, při kterém se získávají tekuté uhlovodíky. Produkt získaný tímto způsobem neobsahuje síru, chlor a jiné heteroatomy, což rozhoduje o jeho využitelnosti jako vysoce kvalitního syntetického oleje. Pro výrobu lze použít polymerový odpad, který je stovky let nezničitelný např. zemědělské fólie a obaly vyrobené z polypropylenu, polyetylénu a polystyrenu.
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Katexy a anexy z nanovláknitého polystyrenu pro rychlé zpracování vody
Marek, J. ; Beneš, Milan J. ; Jelínek, L.
Strongly acidic sulfonovaný cation exchanger on polystyrene nanofibrous matrix (Nanospider TM technology) was prepared by simultaneous sulfonation and crosslinking. Weakly basic nanofibrous anion exchanger was prepared after transformation of sulfogroups to sulfochloride by reaction with ethylene diamine. Nanofibrous products were characterized by sorption capacity. They have sorption kinetic significantly faster in comparison with standard granular ion exchangers.
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