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Application of foaming agents for the production of lightweight materials
Kramná, Adéla ; Vyšvařil, Martin (referee) ; Rovnaník, Pavel (advisor)
Use of lightweight building materials came to forefront in recent decades. The most commonly used materials are aerated and foam concrete but also other materials such as foamed geopolymer have been introduced. This study examines foaming methods of various lightweight building materials which are analysed and evaluated in terms of properties in hardened state. An effect of foaming agent on the structure of the material and its porosity was examined by image analysis using an optical microscope.
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Development of a thermal insulating material designed for use with high temperature
Dokoupil, Martin ; Frajt, Daniel (referee) ; Drochytka, Rostislav (advisor)
The work deals with the development of a new thermal insulation material that contains a secondary raw materials or waste. It is an insulating material with the requirement of resistance to high temperatures - 200 ° C and 500 ° C. Type of material is determined by the way of reducing density - direct and indirect. Direct is achieved by adding lightweight aggregates, indirect is achieved by gas evolution through chemical reaction and the subsequent incorporation of gas into the structure of the material. This thesis is part of the MPO TIP č. FR-TI 2/340 project.
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Processes leading to achievement of higher surface quality of steel castings
Tomková, Jana ; Veselý, Pavel (referee) ; Záděra, Antonín (advisor)
The subject of this thesis is to verify effect of aluminium powder in ground refractory coatin, which is intended for casting od steel castings to organic bonded moulds. The pre-sence of aluminium powder in ground coating was expertised on term of coating in itself - that means immunity to heat shock, penetration etc., and in term of influence on formation of surface defects etc. Outputs of this thesis are: setting of optimum amount of aluminium powder in ground coating and statistically verified analysis of effects of modified coating in term of creation of defects
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Processes leading to achievement of higher surface quality of steel castings
Tomková, Jana ; Veselý, Pavel (referee) ; Záděra, Antonín (advisor)
The subject of this thesis is to verify effect of aluminium powder in ground refractory coatin, which is intended for casting od steel castings to organic bonded moulds. The pre-sence of aluminium powder in ground coating was expertised on term of coating in itself - that means immunity to heat shock, penetration etc., and in term of influence on formation of surface defects etc. Outputs of this thesis are: setting of optimum amount of aluminium powder in ground coating and statistically verified analysis of effects of modified coating in term of creation of defects
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|
Development of a thermal insulating material designed for use with high temperature
Dokoupil, Martin ; Frajt, Daniel (referee) ; Drochytka, Rostislav (advisor)
The work deals with the development of a new thermal insulation material that contains a secondary raw materials or waste. It is an insulating material with the requirement of resistance to high temperatures - 200 ° C and 500 ° C. Type of material is determined by the way of reducing density - direct and indirect. Direct is achieved by adding lightweight aggregates, indirect is achieved by gas evolution through chemical reaction and the subsequent incorporation of gas into the structure of the material. This thesis is part of the MPO TIP č. FR-TI 2/340 project.
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|
|
Application of foaming agents for the production of lightweight materials
Kramná, Adéla ; Vyšvařil, Martin (referee) ; Rovnaník, Pavel (advisor)
Use of lightweight building materials came to forefront in recent decades. The most commonly used materials are aerated and foam concrete but also other materials such as foamed geopolymer have been introduced. This study examines foaming methods of various lightweight building materials which are analysed and evaluated in terms of properties in hardened state. An effect of foaming agent on the structure of the material and its porosity was examined by image analysis using an optical microscope.
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