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Possibilities of application of basalt fibers in concrete
Zourek, Milan ; Hela, Rudolf (referee) ; Bodnárová, Lenka (advisor)
This diploma thesis deals with possibilities of application of basalt fibers in concrete and in cementitious composites. In the theoretical part there is a summary of fibers usually used for fiberconcretes. Manufacturing process of basalt fibers is described, and properties of basalt fibers are summarized. Next part deals with properties of basalt fiber reinforced concrete. Concretely fresh properties, physical-mechanical properties, shrinkage and cracking, microstructure and fire resistance. The last chapter deals with fire resistance of concrete in general. The experimental part of this diploma thesis is divided into two phases. There were two mixes of basalt fiber reinforced concrete made with basalt aggregate and one mix of concrete without basalt fibers in the first phase. Density, consistency by slump and air content were determined as fresh properties. As hardened properties density, compressive strength and flexural strength were determined. There was determined the effect of the temperatures 600 and 800 °C on density, compressive strength and outward of specimens. Also, deformation during the high temperature curing was recorded. In the second phase of the experimental part there were three mixes of cementitious composite made with basalt fibers and one cementitious composite without basalt fibers. Density was determined as a fresh property. Material was monitored during its mixing. As a hardened properties density, flexural strength and compressive strength were determined. There was determined the effect of the temperatures 600 and 800 °C on density, flexural strength, compressive strength and outward of specimens.
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Návrh materiálu na bázi dřeva s požární odolností
Jeřábková, Lucie
Bachelor thesis compares the properties of composite materials with basalt fiber or with glass fiber. The main objective is comparison of the mechanical properties, which include fire resistance. Concretely, thesis will deal with bending properties of composite material with basalt fiber. These properties of composite material with basalt fiber will be compared with the bending properties of the composite material with glass fiber and plywood. The second part will deal with fire resistance of composite material with basalt fiber and will compare with the fire resistance plywood and composite material with glass fiber. Finally will be made a test of the surface resistant against falling bullet.
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Possibilities of application of basalt fibers in concrete
Zourek, Milan ; Hela, Rudolf (referee) ; Bodnárová, Lenka (advisor)
This diploma thesis deals with possibilities of application of basalt fibers in concrete and in cementitious composites. In the theoretical part there is a summary of fibers usually used for fiberconcretes. Manufacturing process of basalt fibers is described, and properties of basalt fibers are summarized. Next part deals with properties of basalt fiber reinforced concrete. Concretely fresh properties, physical-mechanical properties, shrinkage and cracking, microstructure and fire resistance. The last chapter deals with fire resistance of concrete in general. The experimental part of this diploma thesis is divided into two phases. There were two mixes of basalt fiber reinforced concrete made with basalt aggregate and one mix of concrete without basalt fibers in the first phase. Density, consistency by slump and air content were determined as fresh properties. As hardened properties density, compressive strength and flexural strength were determined. There was determined the effect of the temperatures 600 and 800 °C on density, compressive strength and outward of specimens. Also, deformation during the high temperature curing was recorded. In the second phase of the experimental part there were three mixes of cementitious composite made with basalt fibers and one cementitious composite without basalt fibers. Density was determined as a fresh property. Material was monitored during its mixing. As a hardened properties density, flexural strength and compressive strength were determined. There was determined the effect of the temperatures 600 and 800 °C on density, flexural strength, compressive strength and outward of specimens.
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Návrh materiálu na bázi dřeva s požární odolností
Jeřábková, Lucie
Bachelor thesis compares the properties of composite materials with basalt fiber or with glass fiber. The main objective is comparison of the mechanical properties, which include fire resistance. Concretely, thesis will deal with bending properties of composite material with basalt fiber. These properties of composite material with basalt fiber will be compared with the bending properties of the composite material with glass fiber and plywood. The second part will deal with fire resistance of composite material with basalt fiber and will compare with the fire resistance plywood and composite material with glass fiber. Finally will be made a test of the surface resistant against falling bullet.
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Cement composite materials with polypropylene fibers
Preisner, Martin ; Hela, Rudolf (referee) ; Bodnárová, Lenka (advisor)
This thesis deals with summarizing the possible effects of the addition of polypropylene fibers, especially low temperature plasma treated on the properties of cement composites and concrete. They are given basic information and distribution of polypropylene fibers. It describes the finish polypropylene fiber low-temperature plasma. The experimental part focuses on the effect of dispersion of polypropylene fibers treated plasma in the cement matrix.
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